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DTSTART;TZID=America/New_York:20260424T120000
DTEND;TZID=America/New_York:20260424T130000
DTSTAMP:20260424T161108
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UID:10003907-1777032000-1777035600@cmsa.fas.harvard.edu
SUMMARY:The Intermingling of Symmetry and Parametrization in Matrix Product States
DESCRIPTION:Member Seminar \nSpeaker: Daniel Spiegel \nTitle: The Intermingling of Symmetry and Parametrization in Matrix Product States \nAbstract: In the study of quantum spin systems\, it is by now well-known that interesting phases of quantum matter can arise from gapped ground states when the system is invariant under a symmetry group G or when the system varies continuously with a parameter in a topological space X. In these cases\, phases are characterized by indices taking values in group cohomology of G or the cohomology of X\, respectively. The situation where one has both a symmetry and a parametrization is much less studied but can lead to interesting phases even when both the aforementioned indices are trivial. In this talk\, I will discuss work in progress on a simple construction for general index for symmetry protected parametrized systems of matrix product states and will show some illustrative examples.
URL:https://cmsa.fas.harvard.edu/event/member-seminar-42426/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Member Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Member-Seminar-4.24.26-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260423T160000
DTEND;TZID=America/New_York:20260423T170000
DTSTAMP:20260424T161108
CREATED:20251006T173927Z
LAST-MODIFIED:20260423T155101Z
UID:10003806-1776960000-1776963600@cmsa.fas.harvard.edu
SUMMARY:Sixth Annual Yip Lecture | Regina Barzilay\, MIT: Can machine learning methods design drugs?
DESCRIPTION:Sixth Annual Yip Lecture \nDate: April 23\, 2026 \nTime: 4:00–5:00 pm ET \nLocation: Harvard Science Center Hall A & via Zoom Webinar \nSpeaker: Regina Barzilay\, MIT \nTitle: Can ML methods design drugs? \nAbstract: Today\, life sciences are driven by prohibitively expensive wet lab experimentations\, which limit the pace and scope of discovery. This talk focuses on AI algorithms that enable in-silico modeling of biological processes. Specifically\, I will focus on algorithms for molecular and cellular modeling. I will highlight several successful examples where these algorithms have already transformed drug discovery. In the second part of the talk\, I want to focus on problems where current methods fail to deliver as expected\, motivating the need for algorithmic innovations. \nIn-person registration \nWebinar registration \n  \nRegina Barzilay is a School of Engineering Distinguished Professor for AI and Health in the Department of Electrical Engineering and Computer Science (EECS) at MIT. Since 2018\, she has been the AI faculty lead for the MIT Jameel Clinic and a member of MIT CSAIL. \nShe is a member of three national academies\, including the National Academy of Engineering\, the National Academy of Medicine\, and the American Academy of Arts & Sciences. \nShe is also a recipient of various awards\, including a 2017 MacArthur fellowship “Genius Grant.” In 2020\, she was awarded the Squirrel AI Award for Artificial Intelligence for the Benefit of Humanity. More recently\, she has been recognized in the 2025 TIME100 AI List and awarded with the IEEE Frances E. Allen Medal for her development of innovative machine learning algorithms that have significantly advanced human language technology and transformed medical diagnostics and drug discovery. \nShe completed her PhD in Computer Science from Columbia University\, and spent a year as a postdoc at Cornell University. Barzilay received her undergraduate degree from Ben-Gurion University of the Negev\, Israel. \nThe Yip Lecture takes place thanks to the support of Dr. Shing-Yiu Yip. \n  \n 
URL:https://cmsa.fas.harvard.edu/event/yip-2026/
LOCATION:MA
CATEGORIES:Public Lecture,Special Lectures,Yip Lecture Series
ATTACH;FMTTYPE=image/jpeg:https://cmsa.fas.harvard.edu/media/yip_2026_final.2.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260423T133000
DTEND;TZID=America/New_York:20260423T143000
DTSTAMP:20260424T161108
CREATED:20260128T184941Z
LAST-MODIFIED:20260421T144522Z
UID:10003884-1776951000-1776954600@cmsa.fas.harvard.edu
SUMMARY:Boundedness for K-trivial varieties with fibrations
DESCRIPTION:Differential Geometry and Physics Seminar  \nSpeaker: François Greer\, MSU \nTitle: Boundedness for K-trivial varieties with fibrations \nAbstract: According to the Beauville-Bogomolov decomposition theorem\, any smooth K-trivial variety admits a finite cover by a product of (1) abelian varieties\, (2) strict Calabi-Yau varieties\, and (3) irreducible holomorphic symplectic varieties (IHSV). In a fixed dimension\, all abelian varieties are diffeomorphic\, and indeed deformation equivalent through non-algebraic complex tori. The corresponding question remains largely open for cases (2) and (3). If we assume that a variety of class (2) or (3) admits a non-trivial fibration structure\, then much more can be shown. In particular\, fibered Calabi-Yau threefolds have bounded moduli problem\, and IHSV of a fixed dimension with a Lagrangian fibration have bounded moduli. This is based on joint work with Engel\, Filipazzi\, Mauri\, and Svaldi. \n\n  \n 
URL:https://cmsa.fas.harvard.edu/event/dgphys_42326/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Differential Geometry and Physics Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/DG-Physics-Seminar-4.23.26.docx.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260422T090000
DTEND;TZID=America/New_York:20260422T103000
DTSTAMP:20260424T161108
CREATED:20260130T191058Z
LAST-MODIFIED:20260408T141512Z
UID:10003887-1776848400-1776853800@cmsa.fas.harvard.edu
SUMMARY:CMSA/Tsinghua Math-Science Literature Lecture: Nicolai Reshetikhin (Tsinghua): Asymptotic representation theory
DESCRIPTION:CMSA/Tsinghua Math-Science Literature Lecture \nDate: April 22\, 2026 \nTime: 9:00 – 10:30 am ET \nLocation: via Zoom Webinar \nSpeaker: Nicolai Reshetikhin\, Yau Mathematical Sciences Center\, Tsinghua University \nTitle: Asymptotic representation theory \nAbstract: Loosely speaking asymptotic representation theory studies representations of “large” groups or algebras. One of the first results in this direction is the study of Plancherel measures on the symmetric group $S_N$ in the limit $N\to \infty$ by Vershik and Kerov and Logan and Shepp. The first part of the talk will be an overview of results on statistics of irreducible representations in large tensor products. Then we focus on more modern results on statistics of tilting and projective modules in large tensor products and on how some problems in asymptotic representation theory are related to dimer models in statistical mechanics. \nRegistration is required for the Zoom link.\nZoom webinar registration link \n  \n\nBeginning in Spring 2020\, the CMSA began hosting a lecture series on literature in the mathematical sciences\, with a focus on significant developments in mathematics that have influenced the discipline\, and the lifetime accomplishments of significant scholars. \n  \n 
URL:https://cmsa.fas.harvard.edu/event/mathscilit2026_nr/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Math Science Literature Lecture Series,Public Lecture,Special Lectures
ATTACH;FMTTYPE=image/jpeg:https://cmsa.fas.harvard.edu/media/Mathlit_Reshetikhin.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260421T161500
DTEND;TZID=America/New_York:20260421T180000
DTSTAMP:20260424T161108
CREATED:20260408T190831Z
LAST-MODIFIED:20260417T142320Z
UID:10003930-1776788100-1776794400@cmsa.fas.harvard.edu
SUMMARY:Introduction to A-infty categories
DESCRIPTION:Joint Math/CMSA Geometry and Quantum Theory Seminar \nSpeaker: Ahsan Khan\, Harvard CMSA \nTitle: Introduction to A-infty categories\n\nAbstract: I will give a pedagogical account of A-infty categories and the various places they show up in mathematical physics.\n 
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_42126/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/Geometry-and-Quantum-Theory-Seminar-04.21.26-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260420T150000
DTEND;TZID=America/New_York:20260420T160000
DTSTAMP:20260424T161108
CREATED:20260210T203936Z
LAST-MODIFIED:20260420T142242Z
UID:10003899-1776697200-1776700800@cmsa.fas.harvard.edu
SUMMARY:Zigzags\, adjoints\, and bordisms
DESCRIPTION:Quantum Field Theory and Physical Mathematics Seminar \nSpeaker: Lorenzo Riva (Harvard CMSA) \nTitle: Zigzags\, adjoints\, and bordisms \nAbstract: We will learn how to freely add adjoints to a category using a combinatorial procedure which involves drawing zigzags of squares. Peculiarly\, we can use these to draw some bordisms. This is joint work with Martina Rovelli.
URL:https://cmsa.fas.harvard.edu/event/qft_4202026/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Quantum Field Theory and Physical Mathematics
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-QFT-and-Physical-Mathematics-4.20.26-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260417T120000
DTEND;TZID=America/New_York:20260417T130000
DTSTAMP:20260424T161108
CREATED:20260212T190403Z
LAST-MODIFIED:20260409T160741Z
UID:10003906-1776427200-1776430800@cmsa.fas.harvard.edu
SUMMARY:Higgs and Coulomb branches: Geometry and Representation Theory
DESCRIPTION:Member Seminar \nSpeaker: Vasily Krylov \nTitle: Higgs and Coulomb branches: Geometry and Representation Theory \nAbstract: Higgs and Coulomb branches of quiver gauge theories form two important families of Poisson varieties that are expected to be exchanged under so-called 3D mirror symmetry. Quantized Coulomb branches are associative algebras deforming the algebras of functions on Coulomb branches. They are closely related to many important representation-theoretic structures\, such as Yangians\, quantum groups\, and Hecke algebras. In this talk\, I will discuss how 3D mirror symmetry\, together with other insights motivated by physics\, yields very explicit answers to purely representation-theoretic questions about representations of some of these quantum groups. Talk is based on joint works with Dinkins\, Karpov\, Klyuev\, and Lance.
URL:https://cmsa.fas.harvard.edu/event/member-seminar-41726/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Member Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Member-Seminar-4.17.26.docx.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260416T160000
DTEND;TZID=America/New_York:20260416T170000
DTSTAMP:20260424T161108
CREATED:20260317T165726Z
LAST-MODIFIED:20260402T134930Z
UID:10003918-1776355200-1776358800@cmsa.fas.harvard.edu
SUMMARY:Interpolation for points in $\mathbb{P}^N\, N\geq 2$
DESCRIPTION:Algebra Seminar \nSpeaker: Dipendranath Mahato\, Tulane University \nTitle: Interpolation for points in $\mathbb{P}^N\, N\geq 2$ \nAbstract: Interpolation problems study hypersurfaces in projective space passing through prescribed sets of points. Classically\, one asks how many independent conditions a collection of points imposes on hypersurfaces of a fixed degree\, a question that can be studied algebraically via homogeneous ideals and their Hilbert functions. In this talk\, I will begin with the classical interpolation problem for reduced points and introduce the algebraic framework used to study it. I will then move to fat point schemes\, where points are assigned multiplicities and hypersurfaces are required to vanish to higher order. In this setting\, interpolation problems naturally lead to symbolic powers of ideals and containment relations between symbolic and ordinary powers. I will conclude by discussing open questions\, including potential connections between interpolation problems and combinatorial structures such as matroids.
URL:https://cmsa.fas.harvard.edu/event/algebra-seminar_41626/
LOCATION:CMSA Room G02\, 20 Garden Street\, Cambridge\, MA\, 02138
CATEGORIES:Algebra Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Algebra-Seminar-4.16.26_G02.docx.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260415T170000
DTEND;TZID=America/New_York:20260415T180000
DTSTAMP:20260424T161108
CREATED:20250409T160808Z
LAST-MODIFIED:20260423T155210Z
UID:10003725-1776272400-1776276000@cmsa.fas.harvard.edu
SUMMARY:Millennium Prize Problems Lecture - Peter Sarnak: Riemann Hypothesis
DESCRIPTION:  \n \nDate: April 15\, 2026 \nTime: 5:00–6:00 pm \nLocation: Harvard Science Center Hall C\, 1 Oxford St.\, Cambridge MA \nSpeaker: Peter Sarnak\, Institute for Advanced Study \nTitle: The Riemann Hypothesis \nAbstract: After reviewing the hypothesis as put forth by Riemann we discuss its generalizations and analogues. We highlight a few of their implications and workarounds\, and probing their truths. \nRead more about the Riemann Hypothesis at the Clay Math website. \nOrganizers: Martin Bridson\, Clay Mathematics Institute | Dan Freed\, Harvard University and CMSA | Mike Hopkins\, Harvard University \n  \n\n                   \n\nMillennium Prize Problems Lecture Series
URL:https://cmsa.fas.harvard.edu/event/clay_41526/
LOCATION:Harvard Science Center\, 1 Oxford Street\, Cambridge\, MA\, 02138
CATEGORIES:Millennium Prize Problems Lecture,Special Lectures
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/Sarnak_web-ad.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260415T080000
DTEND;TZID=America/New_York:20260416T170000
DTSTAMP:20260424T161108
CREATED:20250502T183823Z
LAST-MODIFIED:20260423T163805Z
UID:10003751-1776240000-1776358800@cmsa.fas.harvard.edu
SUMMARY:Swampland and our Universe
DESCRIPTION:Swampland and our Universe \nDates: April 15–16\, 2026 \nLocation: Harvard CMSA\, Room G10\, 20 Garden Street\, Cambridge MA \nThe swampland program has inspired a range of new ideas in both cosmology and neutrino physics. This workshop brings together experts in neutrino physics\, dark energy\, dark matter\, early-universe cosmology\, and string theory to share insights on these developments and to discuss current and future experimental tests. \nSpeakers \n\nIgnatios Antoniadis\, IAS\, Princeton\nAlek Bedroya\, Princeton\nMike Boylan-Kolchin\, UT Austin\nM.C. Gonzalez-Garcia\, YITP Stony Brook & ICREA U. Barcelona\nMustapha Ishak-Boushaki\, UT Dallas\nMarc Kamionkowski\, Johns Hopkins\nMiguel Montero\, Institute of Theoretical Physics\, Madrid\nGeorges Obied\, U Chicago\nMatt Reece\, Harvard\nTracy Slatyer\, MIT\n\nOrganizers: Luis Anchordoqui (CUNY Lehman College)\, Sonia Paban (Harvard Physics)\, and  Cumrun Vafa (Harvard Physics) \n  \n \n  \n  \nVideos are available on the CMSA Youtube Swampland Playlist \nSchedule\n(download pdf) \nWednesday\, Apr. 15\, 2026 \n8:00–9:00 am\nBreakfast \n9:00–10:00 am\nMarc Kamionkowski\, Johns Hopkins: Dark-matter dynamics and new physics \nAbstract: Galactic halos that are spherical\, stationary\, and composed of collisionless dark matter are easy to describe mathematically. If dark matter decays or interacts or there is some departure from equilibrium or time evolution of the system\, all bets are off. In this case costly N-body simulations are required. If\, however\, one retains the assumption of spherical symmetry\, these systems can be evolved numerically with a far simpler algorithm that is easily coded run in a matter of minutes on a laptop\, rather than a day on a supercomputer. I will describe this approach and illustrate with simulations of self-interacting dark matter\, decaying dark matter (with and without anisotropic velocity distributions\, supermassive-black-hole growth\, tidal stripping\, mixed SIDM/CDM models. Come prepared with your own non-standard dark-matter model; we’ll see if we can simulate it during the talk! \n10:00–10:30 am\nCoffee Break \n10:30–11:30 am\nTracy Slatyer\, MIT: What (more) the CMB can teach us about dark matter \nAbstract: Observations of the cosmic microwave background have already provided critical evidence for dark matter\, but can also stringently constrain a range of dark matter properties. I will outline CMB constraints on dark matter properties based on purely gravitational effects\, and then discuss in more detail how both CMB anisotropies and the blackbody spectrum can be used to test dark matter interactions with the Standard Model. \n11:30 am–1:00 pm\nLunch Break (catered) \n1:00–2:00 pm\nAlek Bedroya\, Princeton: How Quantum Gravity Constrains Physics on the Largest Length Scales \nAbstract: I will review the hierarchy of energy scales in quantum gravity\, from the Hubble scale in the IR to the quantum-gravity cutoff and the Planck scale in the UV\, and emphasize the nontrivial UV/IR relations that connect them. I will discuss conjectures constraining scalar potentials and explain how they are related to the behavior of the other energy scales\, together with bottom-up arguments based on general principles of quantum gravity such as holography. In particular\, I will explain how well-motivated holographic assumptions lead to strong restrictions on scalar potentials\, ruling out parametrically prolonged accelerated expansion for positive potentials and obstructing parametric scale separation for negative potentials associated with AdS vacua. Title:
How Quantum Gravity Constrains Physics on the Largest Length Scales\nAbstract:
I will review the hierarchy of energy scales in quantum gravity\, from the Hubble scale in the IR to the quantum-gravity cutoff and the Planck scale in the UV\, and emphasize the nontrivial UV/IR relations that connect them. I will discuss conjectures constraining scalar potentials and explain how they are related to the behavior of the other energy scales\, together with bottom-up arguments based on general principles of quantum gravity such as holography. In particular\, I will explain how well-motivated holographic assumptions lead to strong restrictions on scalar potentials\, ruling out parametrically prolonged accelerated expansion for positive potentials and obstructing parametric scale separation for negative potentials associated with AdS vacua. \n2:00–2:30 pm\nCoffee Break \n2:30–3:30 pm\nMustapha Ishak-Boushaki\, UT Dallas: Persistent and serious challenge to the ΛCDM throne: Evidence for dynamical dark energy rising from combinations of different types of datasets \nAbstract: We derive multiple constraints on dark energy and compare dynamical dark energy models with a time-varying equation of state (w0waCDM) versus a cosmological constant model (LCDM). We use Baryon Acoustic Oscillation (BAO) from DESI and DES\, Cosmic Microwave Background from Planck with and without lensing from Planck and ACT (noted CMBL and CMB\, respectively)\, supernovae(SN)\, and cross-correlations between galaxy positions and galaxy lensing from DES. We use pairs or triplets of datasets where we exclude one type of dataset each time and categorize them as “NO SN”\, “NO CMB” and “NO BAO” combinations. In all cases\, we find that the combinations favor the w0waCDM model over LCDM\, with significance ranging from 2.0 to 3.0-sigma. The persistence of this pattern across various dataset combinations even when any of the datasets is excluded supports an overall validation of this trending result regardless of any specific dataset. Next\, we use larger combinations of these datasets after verifying their mutual consistency within the w0waCDM model. We find combinations that give robust significance levels\, with DESI+DESY6BAO+CMBL+SN giving 3.4-sigma. In sum\, while we need to remain cautious\, the trend and pattern of these results beyond any single type of dataset and their associated systematics presents a compelling overall portrait not in favor of the LCDM and constitutes a serious challenge to the model’s reign. A few other cosmological results will be provided. \n3:30–4:00 pm\nCoffee Break \n4:00–5:00 pm\nGeorges Obied\, U Chicago: The Dark Dimension and its interplay with DESI data \nAbstract: In this talk\, I will discuss the motivation for considering an extra mesoscopic Dark Dimension of length l ~ 1 – 10 microns\, taking into account theoretical and observational arguments. I will then talk about cosmological aspects of the Dark Dimension. In particular this scenario leads\, by the universal coupling of the Standard Model sector to bulk gravitons\, to massive spin 2 KK excitations of the graviton in the Dark Dimension (the “dark gravitons”) as an unavoidable dark matter candidate. Observations allow such an extra dimension of size in the micron range. Finally\, I will discuss how this scenario can naturally accommodate features recently observed by the DESI survey such as an effective dark energy equation of state that is smaller than -1. \n   \nThursday\, Apr. 16\, 2026 \n8:00–8:30 am\nBreakfast \n8:30–9:30 am\nMC Gonzalez-Garcia\, YITP Stony Brook & ICREA U. Barcelona: Massive Neutrinos in 2026: What we know\, what we do not know (yet?)\, and what we do not understand \nAbstract: In this talk I will present an update of the current understanding (and some not understanding) of the neutrino masses and the lepton mixing and some other minimal SM extensions as derived from direct scrutiny of the results of neutrino flavour oscillation experiments\, some other laboratory probes\, and the cosmos. \n9:30–10:00 am\nCoffee Break \n10:00–11:00 am\nMiguel Montero\, IFT\, Madrid: Neutrinos and B-L symmetry in the Dark Dimension scenario \nAbstract: The Dark Dimension proposes the existe of a micrometer-sized large extra dimension\, whose size is tied to the observed small vacuum energy. I will review the scenario\, and then discuss how to embed the B-L global symmetry of the SM\, focusing on one possibility which leads to an explanation of the observed coincidence between neutrino mass scale and the  vacuum energy scale\, while leading to 3 light species of right-handed neutrinos. I will also briefly discuss potential opportunities for detection of the resulting neutrino oscillations. \n11:00–11:30 am\nCoffee Break \n11:30 am–12:30 pm\nIgnatios Antoniadis\, IAS\, Princeton: Searching for the dark dimension in neutrino experiments \nAbstract: Micron size extra dimensions offer a possibility to explain the smallness of neutrino masses if the right-handed neutrino propagates in the higher dimensional bulk. I will discuss the theoretical framework and the experimental signatures of this proposal in present and future experiments of KATRIN prototype\, aiming to measure the magnitude of neutrino masses and to search for extra sterile-type species. \n12:30–1:30 pm\nLunch Break (catered) \n1:30–2:30 pm\nMike Boylan-Kolchin\, UT Austin: Galaxies as Tracers of the Matter Density Field \nAbstract: Galaxy formation is often (rightly) thought of as involving a complex interplay of messy astrophysical processes\, but it also traces the nonlinear evolution of the matter density in the Universe. Remarkably\, it appears that properties of this nonlinear field are intimately connected to properties of the initial linear fluctuations and some basic physics of dark matter interactions. I will explore some of these connections\, with applications that include the surprisingly fast evolution of early galaxy formation as revealed by JWST and properties of the lowest-mass dark matter clumps capable of hosting galaxies in the local Universe.\n2:30–3:00 pm\nCoffee Break \n3:00–4:00 pm\nMatt Reece\, Harvard: Axions from String Theory\, and String Theory from Axions \nAbstract: String theory compactifications contain the right ingredients to produce axion fields that might solve the Strong CP problem or contribute to dark matter or dynamical dark energy in our universe. After briefly reviewing some of these ingredients\, I will frame the inverse question: suppose that an axion is discovered\, and its decay constant is measured in an experiment. Could this help us to locate ourselves in the string landscape? In particular\, I will discuss how an axion could give us clues about the fundamental string scale and the scale of supersymmetry breaking. \n  \n  \n  \n  \n 
URL:https://cmsa.fas.harvard.edu/event/swampland2026/
LOCATION:CMSA 20 Garden Street Cambridge\, Massachusetts 02138 United States
CATEGORIES:Workshop
ATTACH;FMTTYPE=image/jpeg:https://cmsa.fas.harvard.edu/media/swampland_2026.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260414T161500
DTEND;TZID=America/New_York:20260414T180000
DTSTAMP:20260424T161108
CREATED:20260408T190745Z
LAST-MODIFIED:20260408T200311Z
UID:10003929-1776183300-1776189600@cmsa.fas.harvard.edu
SUMMARY:Abelian gauge fields and duality
DESCRIPTION:Joint Math/CMSA Geometry and Quantum Theory Seminar \nSpeaker: Dan Freed\, Harvard Math & CMSA \nTitle: Abelian gauge fields and duality \nAbstract: Motivated by the new paper arXiv:2603.19161\, I will give a general talk about abelian gauge fields\, including duality. I will start with classical Maxwell theory\, then discuss various “finite” examples\, the typical p-form abelian gauge field\, and some exotic examples such as Ramond–Ramond fields and the B-field in superstring theory. I will then get to the new paper and\, time permitting\, will suggest a very general framework that covers all examples. \n 
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_41426/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/Geometry-and-Quantum-Theory-Seminar-04.14.26.docx.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260410T120000
DTEND;TZID=America/New_York:20260410T130000
DTSTAMP:20260424T161109
CREATED:20260212T190254Z
LAST-MODIFIED:20260330T200409Z
UID:10003905-1775822400-1775826000@cmsa.fas.harvard.edu
SUMMARY:Quantum topology from dynamics
DESCRIPTION:Member Seminar \nSpeaker: Sunghyuk Park\, CMSA \nTitle: Quantum topology from dynamics \nAbstract: Dynamics studies the long-term behavior of systems that evolve over time\, such as the famous Lorenz system.\nQuantum topology\, by contrast\, studies knots and low-dimensional manifolds through invariants that are usually constructed using representation-theoretic tools. In this talk\, I will explain how quantum invariants of knots and 3-manifolds can be recovered from the dynamics of certain three-dimensional flows. Time permitting\, I will also explain how this new bridge arises from ideas in topological string theory. \n 
URL:https://cmsa.fas.harvard.edu/event/member-seminar-41026/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Member Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Member-Seminar-4.10.26-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260409T160000
DTEND;TZID=America/New_York:20260409T170000
DTSTAMP:20260424T161109
CREATED:20260310T170229Z
LAST-MODIFIED:20260310T192334Z
UID:10003917-1775750400-1775754000@cmsa.fas.harvard.edu
SUMMARY:Multiplicities of graded families of ideals on Noetherian local rings
DESCRIPTION:Algebra Seminar \nSpeaker: Dale Cutkosky\, University of Missouri \nTitle: Multiplicities of graded families of ideals on Noetherian local rings \nAbstract: Let $R$ be an arbitrary $d$-dimensional Noetherian local ring with maximal ideal $m_R$. In this talk\, we give a generalization of the multiplicity $e(I)$ of an $m_R$-primary ideal $I$ of $R$ to a multiplicity $e(\mathcal I)$ of a graded family of $m_R$-primary ideals $\mathcal I$ in $R$. This multiplicity gives the classical multiplicity $e(I)$ if $\mathcal I=\{I^n\}$ is the $I$-adic filtration\, and agrees with the volume\, $\lim_{n\rightarrow \infty}d!\frac{\ell(R/I_n) }{n^d}$ for $R$ such that $\dim N(\hat R)>d$\, the required condition for the volume of graded families of $m_R$-primary ideals to exist as a limit. We will show that many of the classical theorems for the multiplicity of an ideal generalize to this multiplicity\, including mixed multiplicities\, the Rees theorem and the Minkowski inequality and equality. We give proofs which are independent of the theory of volumes and Okounkov bodies for all of our results\, with the one exception being the proof of the Minkowski equality. We do this by interpreting the multiplicity of graded families of $m_R$-primary ideals as an intersection product on the family of $R$-schemes which are obtained by blowing up $m_R$-primary ideals in $R$. \n 
URL:https://cmsa.fas.harvard.edu/event/algebra-seminar_4926/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Algebra Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Algebra-Seminar-4.9.26.docx-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260407T161500
DTEND;TZID=America/New_York:20260407T180000
DTSTAMP:20260424T161109
CREATED:20260402T150251Z
LAST-MODIFIED:20260402T152237Z
UID:10003928-1775578500-1775584800@cmsa.fas.harvard.edu
SUMMARY:A Mumford form on infinite Grassmannians
DESCRIPTION:Joint Math/CMSA Geometry and Quantum Theory Seminar \nSpeaker: Oswaldo Vázquez (Harvard) \nTitle: A Mumford form on infinite Grassmannians \nAbstract: The Polyakov measure in bosonic string theory can be expressed in terms of the Mumford form\, which is a trivializing section of a product of determinant line bundles over the moduli space of genus g curves. We will discuss the work in https://arxiv.org/abs/2412.18570\, which reviews how the moduli space can be embedded in an infinite dimensional Grassmannian as a Virasoro orbit and generalizes the Mumford form to other such orbits. In particular\, this “universal Mumford form” can be described in terms of coordinates in the Grassmannian\, which are amenable to computation and thus could have implications to the evaluation of amplitudes. \n 
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_4726/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/Geometry-and-Quantum-Theory-Seminar-04.07.26.docx.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260406T163000
DTEND;TZID=America/New_York:20260406T173000
DTSTAMP:20260424T161109
CREATED:20251223T190645Z
LAST-MODIFIED:20260402T152156Z
UID:10003851-1775493000-1775496600@cmsa.fas.harvard.edu
SUMMARY:Facets of link homology
DESCRIPTION:Colloquium \nSpeaker: Mikhail Khovanov\, Johns Hopkins University \nTitle: Facets of link homology \nAbstract: We will review some link homology theories of algebraic origin and their connections to representation theory and geometry.
URL:https://cmsa.fas.harvard.edu/event/colloquium-22326/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Colloquium-4.6.2026.docx.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260406T150000
DTEND;TZID=America/New_York:20260406T160000
DTSTAMP:20260424T161109
CREATED:20260224T161017Z
LAST-MODIFIED:20260401T201808Z
UID:10003912-1775487600-1775491200@cmsa.fas.harvard.edu
SUMMARY:Twistorial constructions of higher genus integrability
DESCRIPTION:Quantum Field Theory and Physical Mathematics Seminar \nSpeaker: Seraphim Jarov\, Perimeter Institute \nTitle: Twistorial constructions of higher genus integrability \nAbstract: I will present a new method to engineer integrable models in 4d with higher genus spectral parameters. The method has a twistorial origin – by working on a branched covering of twistor space\, I show how one can derive deformations of holomorphic BF theory on twistor space which descend to elliptic and hyperelliptic models on R^4 via the Penrose transform. I show how one can bootstrap the Penrose transformed actions using symmetry and integrability to find deformations of self-dual Yang-Mills theory. I will also discuss some novel deformations of a BF type description of Hitchin’s equations. This is based on my paper: 2509.12486
URL:https://cmsa.fas.harvard.edu/event/qft_4626/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Quantum Field Theory and Physical Mathematics
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-QFT-and-Physical-Mathematics-4.6.26.docx.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260403T120000
DTEND;TZID=America/New_York:20260403T130000
DTSTAMP:20260424T161109
CREATED:20260212T190229Z
LAST-MODIFIED:20260331T190743Z
UID:10003904-1775217600-1775221200@cmsa.fas.harvard.edu
SUMMARY:Failures of Holographic Emergence
DESCRIPTION:Member Seminar \nSpeaker: Elliott Gesteau\, CMSA \nTitle: Failures of Holographic Emergence \nAbstract: Recent developments have taught us that some semiclassical spacetimes\, in particular those containing closed universe components\, cannot emerge from a holographic correspondence. In this talk\, I will explain how one can get to this conclusion by using either quantum information theory or properties of the large N limit of AdS/CFT\, and propose a criterion for detecting failures of spacetime emergence. \n 
URL:https://cmsa.fas.harvard.edu/event/member-seminar-4326/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Member Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Member-Seminar-4.3.26.docx.1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260401T120000
DTEND;TZID=America/New_York:20260401T130000
DTSTAMP:20260424T161109
CREATED:20260327T194647Z
LAST-MODIFIED:20260327T195536Z
UID:10003925-1775044800-1775048400@cmsa.fas.harvard.edu
SUMMARY:CMSA Q&A Seminar: Lauren Williams\, Harvard
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Lauren Williams\, Harvard \nTopic: The First Proof Project \n 
URL:https://cmsa.fas.harvard.edu/event/cmsaqa_4126/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Q-A-Seminar-4.1.2026-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260331T161500
DTEND;TZID=America/New_York:20260331T180000
DTSTAMP:20260424T161109
CREATED:20260323T144017Z
LAST-MODIFIED:20260330T153340Z
UID:10003920-1774973700-1774980000@cmsa.fas.harvard.edu
SUMMARY:1-shifted Yangians from 1-shifted Lie bialgebras
DESCRIPTION:Joint Math/CMSA Geometry and Quantum Theory Seminar \nSpeaker: Vasily Krylov\, Harvard \nTitle: 1-shifted Yangians from 1-shifted Lie bialgebras \nAbstract: In the previous talk\, Keyou explained that the fusion of line defects in 3d holomorphic–topological field theories is expected to be governed by so-called DG-shifted Yangians. Following arXiv:2503.08770\, I will present examples of such DG-shifted Yangians arising from 1-shifted Lie bialgebras. We will discuss both the classical and DG-shifted settings from a purely mathematical perspective.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_33126/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/Geometry-and-Quantum-Theory-Seminar-03.31.26-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260330T150000
DTEND;TZID=America/New_York:20260330T160000
DTSTAMP:20260424T161109
CREATED:20260126T190411Z
LAST-MODIFIED:20260325T163011Z
UID:10003879-1774882800-1774886400@cmsa.fas.harvard.edu
SUMMARY:K-theoretic stable envelopes\, quantum loop groups and wall-crossings
DESCRIPTION:Quantum Field Theory and Physical Mathematics Seminar \nSpeaker: Tianqin Zhu\, Columbia University \nTitle: K-theoretic stable envelopes\, quantum loop groups and wall-crossings \nAbstract: The stable envelope is an important tool in both geometric representation theory and the enumerative geometry. One of the most important application is that it generates the geometric quantum loop group via the FRT formalism. In this talk\, we will show that the geometric quantum loop group is isomorphic to the Drinfeld double given by the preprojective K-theoretic Hall algebra and the nilpotent K-theoretic Hall algebra. Moreover we will show a more refined result that the wall-crossing for the K-theoretic stable envelope is controlled by the universal R-matrix for the slope subalgebra of the Drinfeld double\, which leads to the isomorphism between the wall subalgebra in geometric quantum loop groups and the slope subalgebras in the Drinfeld double. If time permits\, I will talk about the recent progress of such isomorphism in the case of the critcial stable envelopes in both critical K-theory and critical cohomology. This is based on the work 2511.02161 \n 
URL:https://cmsa.fas.harvard.edu/event/qft_33026/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Quantum Field Theory and Physical Mathematics
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-QFT-and-Physical-Mathematics-3.30.26.docx.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260327T150000
DTEND;TZID=America/New_York:20260327T171500
DTSTAMP:20260424T161109
CREATED:20260323T145751Z
LAST-MODIFIED:20260323T194752Z
UID:10003922-1774623600-1774631700@cmsa.fas.harvard.edu
SUMMARY:Exotic R^4's are unclassifiable
DESCRIPTION:Freedman Seminar \nSpeaker: Robert Gompf\, UT Austin \nTitle: Exotic R^4’s are unclassifiable \nAbstract: We will use descriptive set theory to show that there is a precise sense in which exotic R^4’s are unclassifiable. For other open manifolds\, we can reach a much higher level of unclassifiability. This is work in progress with Aristotelis Panagiotopoulos.
URL:https://cmsa.fas.harvard.edu/event/freedman_32726/
LOCATION:Virtual
CATEGORIES:Freedman Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Freedman-Seminar-3.27.26-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260326T160000
DTEND;TZID=America/New_York:20260326T170000
DTSTAMP:20260424T161109
CREATED:20260127T192705Z
LAST-MODIFIED:20260310T192236Z
UID:10003883-1774540800-1774544400@cmsa.fas.harvard.edu
SUMMARY:The Beilinson-Bloch conjecture for some non-isotrivial varieties over global function fields
DESCRIPTION:Algebra Seminar \nSpeaker: Matt Broe\, Boston University \nTitle: The Beilinson-Bloch conjecture for some non-isotrivial varieties over global function fields \nAbstract: The Beilinson-Bloch conjecture is a generalization of the Birch and Swinnerton-Dyer conjecture\, which relates the ranks of Chow groups of smooth projective varieties over global fields to the order of vanishing of L-functions. We prove the conjecture for certain classes of non-isotrivial varieties over Fq(t)\, including some cubic threefolds and fivefolds. We deduce the Birch and Swinnerton-Dyer conjecture for their intermediate Jacobians\, and use it to establish new cases of the Tate conjecture over finite fields. \n 
URL:https://cmsa.fas.harvard.edu/event/algebra-seminar_32626/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Algebra Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Algebra-Seminar_3.26.26.docx-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260326T133000
DTEND;TZID=America/New_York:20260326T143000
DTSTAMP:20260424T161109
CREATED:20260323T144545Z
LAST-MODIFIED:20260324T172207Z
UID:10003921-1774531800-1774535400@cmsa.fas.harvard.edu
SUMMARY:Gauge theory on Hyperkähler manifolds
DESCRIPTION:Differential Geometry and Physics Seminar  \nSpeaker. Emily Autumn Windes (New Uzbekistan University) \nTitle: Gauge theory on Hyperkähler manifolds \nAbstract: In this talk\, I describe various distinguished classes of connections on Hyperkähler manifolds and their dimensional reductions. Then\, I describe a construction of new examples of Sp(2)-instantons\, primitive HYM connections\, and Spin(7)-instantons with symmetry on the manifold T*CP2. This talk is based on joint work with Jesse Madnick and Izar Alonso.
URL:https://cmsa.fas.harvard.edu/event/dgphys_32627/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Differential Geometry and Physics Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/DG-Physics-Seminar-3.26.26.docx-1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260324T161500
DTEND;TZID=America/New_York:20260324T180000
DTSTAMP:20260424T161109
CREATED:20260323T143256Z
LAST-MODIFIED:20260323T143854Z
UID:10003919-1774368900-1774375200@cmsa.fas.harvard.edu
SUMMARY:Line operators in holomorphic QFT
DESCRIPTION:Joint Math/CMSA Geometry and Quantum Theory Seminar \nSpeaker: Keyou Zeng (CMSA) \nTitle: Line operators in holomorphic QFT \nAbstract: We will discuss the recent work (arxiv:2508.11749)\, which defines the so called dg shifted Yangian. I will discuss their origin from the study of 3d holomorphic topological field theories\, a variant of 3d TQFT. A dg shifted Yangian is supposed to control the fusion of line defect in the corresponding 3d HT theories. I will illustrate these discussions in examples.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_32426/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/Geometry-and-Quantum-Theory-Seminar-03.24.26-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260319T160000
DTEND;TZID=America/New_York:20260319T170000
DTSTAMP:20260424T161109
CREATED:20260127T192620Z
LAST-MODIFIED:20260310T190851Z
UID:10003882-1773936000-1773939600@cmsa.fas.harvard.edu
SUMMARY:Moduli of subcanonical points
DESCRIPTION:Algebra Seminar \nSpeaker: Dawei Chen\, Boston College \nTitle: Moduli of subcanonical points \nAbstract: Subcanonical points are special Weierstrass points on smooth algebraic curves whose semigroups are symmetric. In this talk\, I will explain the rich geometry of the moduli space of subcanonical points\, with a focus on its connected components\, birational geometry\, topology\, and the deformation theory of related monomial singularities.
URL:https://cmsa.fas.harvard.edu/event/algebra-seminar_31926/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Algebra Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Algebra-Seminar-3.19.26.docx-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260318T140000
DTEND;TZID=America/New_York:20260318T150000
DTSTAMP:20260424T161109
CREATED:20260309T145907Z
LAST-MODIFIED:20260311T161332Z
UID:10003916-1773842400-1773846000@cmsa.fas.harvard.edu
SUMMARY:Dynamic reasoning
DESCRIPTION:New Technologies in Mathematics Seminar \nSpeaker: Emmanuel Abbé\, EPFL\, Institute of Mathematics and School of Computer and Communication Sciences & Apple \nTitle: Dynamic reasoning \nAbstract: In the current AI landscape\, reasoning is frequently equated with the generation of intermediate “thinking traces”. However\, these traces are merely a mechanism\, not the ultimate objective.\nRelying solely on the presence of a trace can be deceptive\, as models often learn to mimic the format of reasoning while effectively overfitting to specific training distributions.\nTo build more robust and versatile reasoners\, we shift our focus to more specific structural properties of the thinking process\, in particular compositionality (inductive CoT\, AdaBack) and abstraction (AbstRaL).
URL:https://cmsa.fas.harvard.edu/event/newtech_31826-2/
LOCATION:Virtual
CATEGORIES:New Technologies in Mathematics Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-NTM-Seminar-3.18.2026.docx-1-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260316T150000
DTEND;TZID=America/New_York:20260316T160000
DTSTAMP:20260424T161109
CREATED:20260224T160950Z
LAST-MODIFIED:20260311T180714Z
UID:10003911-1773673200-1773676800@cmsa.fas.harvard.edu
SUMMARY:Finite N indices from branes and negative branes
DESCRIPTION:Quantum Field Theory and Physical Mathematics Seminar \nSpeaker: Kasia Budzik (Harvard University) \nTitle: Finite N indices from branes and negative branes \nAbstract: Finite-N effects in large-N gauge theories\, such as trace relations\, are expected to be holographically dual to non-perturbative phenomena in string theory\, such as Giant Graviton branes. A convenient setting to study these effects are supersymmetric indices of U(N) gauge theories. The finite-N indices can be reproduced by a series of corrections to the infinite-N result\, known as the Giant Graviton expansion.\nIn this talk I will present a generalization of the Molien-Weyl formula computing generating functions of invariants of supergroups U(N|M)\, which arise as gauge groups of brane/negative brane systems in string theory. The formula leads to a new expansion relating finite-N and infinite-N indices of U(N) gauge theories. I will comment on its relation to Murthy’s Giant Graviton expansion and suggest a physical interpretation in terms of branes and negative branes. This talk is based on arXiv:2509.20451 and work in progress with Davide Gaiotto.
URL:https://cmsa.fas.harvard.edu/event/qft_31626/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Quantum Field Theory and Physical Mathematics
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-QFT-and-Physical-Mathematics-3.16.26.docx-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260312T133000
DTEND;TZID=America/New_York:20260312T143000
DTSTAMP:20260424T161109
CREATED:20260309T143543Z
LAST-MODIFIED:20260309T161222Z
UID:10003915-1773322200-1773325800@cmsa.fas.harvard.edu
SUMMARY:Strongly adapted contact geometry of Anosov 3-flows
DESCRIPTION:Differential Geometry and Physics Seminar  \nSpeaker: Surena Hozoori (Brandeis) \nTitle: Strongly adapted contact geometry of Anosov 3-flows \nAbstract: We will discuss some recent developments in the contact geometric theory of Anosov 3-flows\, whose roots go back to the works of Mitsumatsu and Eliashberg-Thurston in the mid 1990s. In particular\, we provide a contact geometric characterization of Anosov 3-flows based on interactions with Reeb dynamics\, as well as investigate the basic properties of the resulting geometries. Time permitting\, we will discuss how these results allow one to re-approach some classical questions in Anosov dynamics.
URL:https://cmsa.fas.harvard.edu/event/dgphys_31226/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Differential Geometry and Physics Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/DG-Physics-Seminar-3.12.26-scaled.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260311T170000
DTEND;TZID=America/New_York:20260311T180000
DTSTAMP:20260424T161109
CREATED:20250409T160708Z
LAST-MODIFIED:20260316T161233Z
UID:10003724-1773248400-1773252000@cmsa.fas.harvard.edu
SUMMARY:Millennium Prize Problems Lecture - Javier Gómez-Serrano: Navier-Stokes Existence or Breakdown
DESCRIPTION:Date: March 11\, 2026 \nTime: 5:00–6:00 pm \nLocation: Harvard Science Center Hall C\, 1 Oxford St.\, Cambridge MA & via Zoom Webinar \nSpeaker: Javier Gómez-Serrano\, Brown University \nTitle: Navier-Stokes Existence or Breakdown \nAbstract: The Navier-Stokes equations have been the cornerstone of fluid dynamics for over a century\, accurately describing the motion of viscous fluids such as water and air. However\, despite their fundamental importance to mathematics and physics\, a profound question remains unanswered: do solutions to these equations always exist for all time\, or can they break down and develop singularities (points where the equations lose their validity)? In this Millennium Prize Problems Lecture\, I will explore the current mathematical landscape surrounding the Navier-Stokes and related equations. The talk will discuss the historical context\, the ongoing search for global regularity versus finite-time blowup\, and the latest analytical and computational breakthroughs pushing the boundaries of what we know about fluid behavior. \nRead more about the Navier-Stokes Equation at the Clay Math website. \n  \nOrganizers: Martin Bridson\, Clay Mathematics Institute | Dan Freed\, Harvard University and CMSA | Mike Hopkins\, Harvard University \n\n                   \n\nMillennium Prize Problems Lecture Series
URL:https://cmsa.fas.harvard.edu/event/clay_31126/
LOCATION:Harvard Science Center\, 1 Oxford Street\, Cambridge\, MA\, 02138
CATEGORIES:Millennium Prize Problems Lecture,Special Lectures
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/Gomez-Serrano_web-ad3_crop.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260310T161500
DTEND;TZID=America/New_York:20260310T180000
DTSTAMP:20260424T161109
CREATED:20260302T172556Z
LAST-MODIFIED:20260309T175638Z
UID:10003914-1773159300-1773165600@cmsa.fas.harvard.edu
SUMMARY:TQFTs do not detect the Milnor sphere
DESCRIPTION:Joint Math/CMSA Geometry and Quantum Theory Seminar \nSpeaker: Lorenzo Riva\, Harvard CMSA \nTitle: TQFTs do not detect the Milnor sphere \nAbstract: I will talk about the recent paper of Gripaios and Randall-Williams with that title\, where they prove that a functorial TQFT (i.e. a symmetric monoidal functor from the n-dimensional bordism category into a suitably nice target category) assigns the same value to homotopy spheres that bound a parallelizable manifold\, extending some no-go theorems of Reutter and Schommer-Pries.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_31026/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/Geometry-and-Quantum-Theory-Seminar-03.10.26-scaled.png
END:VEVENT
END:VCALENDAR