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  • 2022 NSF FRG Workshop on Discrete Shapes

    CMSA 20 Garden Street, Cambridge, MA, United States

    On May 6–8, 2022, the CMSA  hosted a second NSF FRG Workshop. This project brings together a community of researchers who develop theoretical and computational models to characterize shapes. Their combined interests span Mathematics (Geometry and Topology), Computer Science (Scientific Computing and Complexity Theory), and domain sciences, from Data Sciences to Computational Biology. Scientific research […]

  • Kuranishi_Harvard_10x12-2

    Conference in Memory of Professor Masatake Kuranishi

    Science and Engineering Complex (SEC) 150 Western Ave, Allston, MA 02134, MA

    On May 9–12, 2022, the CMSA hosted the conference Deformations of structures and moduli in geometry and analysis: A Memorial in honor of Professor Masatake Kuranishi. Organizers:  Tristan Collins (MIT) and Shing-Tung Yau (Harvard and Tsinghua) Videos are available on the conference playlist.   Speakers: Charles Fefferman (Princeton University) Teng Fei (Rutgers University) Robert Friedman (Columbia […]

  • Inflation and light Dark Matter constraints from the Swampland

    Virtual

    Abstract: I will explore the interplay between Swampland conjectures and models of inflation and light Dark Matter. To that end, I will briefly review the weak gravity conjecture (WGC) and the related Festina Lente (FL) bound. These have implications for light darkly and milli-charged particles and can disfavor a large portion of parameter space. The FL bound […]

  • CMSA-QMMP-Seminar-05.11.22-1583x2048

    Cosmology from the vacuum

    https://www.youtube.com/watch?v=QMbWPWeuJOQ&list=PL0NRmB0fnLJQAnYwkpt9PN2PBKx4rvdup&index=12 Abstract: We are familiar with the idea that quantum gravity in AdS can holographically emerge from complex patterns of entanglement, but can the physics of big bang cosmology emerge from a quantum many-body system? In this talk I will argue that standard tools of holography can be used to describe fully non-perturbative microscopic models of cosmology in which a period […]

  • CMSA-QMMP-Seminar-05.12.22-1583x2048-1

    Oblique Lessons from the W Mass Measurement at CDF II

    https://www.youtube.com/watch?v=jnWI9sCfAi0&list=PL0NRmB0fnLJQAnYwkpt9PN2PBKx4rvdup&index=11&t=2s Abstract: The CDF collaboration recently reported a new precise measurement of the W boson mass MW with a central value significantly larger than the SM prediction. We explore the effects of including this new measurement on a fit of the Standard Model (SM) to electroweak precision data. We characterize the tension of this new measurement […]

  • CMSA-Interdisciplinary-Science-Seminar-05.12.22-1583x2048

    Geometric Models for Sets of Probability Measures

    Abstract: Many statistical and computational tasks boil down to comparing probability measures expressed as density functions, clouds of data points, or generative models.  In this setting, we often are unable to match individual data points but rather need to deduce relationships between entire weighted and unweighted point sets. In this talk, I will summarize our team’s […]

  • Cobordism and Deformation Class of the Standard Model and Beyond: Proton Stability and Neutrino Mass

    Member Seminar Speaker: Juven Wang Title: Cobordism and Deformation Class of the Standard Model and Beyond: Proton Stability and Neutrino Mass Abstract: ‘t Hooft anomalies of quantum field theories (QFTs) with an invertible global symmetry G (including spacetime and internal symmetries) in a d-dim spacetime are known to be classified by a d+1-dim cobordism group TPd+1(G), […]

  • SMaSH_2022-2

    SMaSH: Symposium for Mathematical Sciences at Harvard

    Science and Engineering Complex (SEC) 150 Western Ave, Allston, MA 02134, MA

    SMaSH: Symposium for Mathematical Sciences at Harvard On Tuesday, May 17, 2022, from 9:00 am – 5:30 pm, the Harvard John A Paulson School of Engineering and Applied Sciences (SEAS) and the Harvard Center of Mathematical Sciences and Applications (CMSA) held a Symposium for Mathematical Sciences for the mathematical sciences community at Harvard. Organizing Committee […]

  • Hypergraph Matchings Avoiding Forbidden Submatchings

    Abstract:  In 1973, Erdős conjectured the existence of high girth (n,3,2)-Steiner systems. Recently, Glock, Kühn, Lo, and Osthus and independently Bohman and Warnke proved the approximate version of Erdős’ conjecture. Just this year, Kwan, Sah, Sawhney, and Simkin proved Erdős’ conjecture. As for Steiner systems with more general parameters, Glock, Kühn, Lo, and Osthus conjectured the […]

  • CMSA-Colloquium-05.18.22

    Statistical Mechanics of Mutilated Sheets and Shells

    Speaker: David Nelson, Harvard University Title: Statistical Mechanics of Mutilated Sheets and Shells Abstract:  Understanding deformations of macroscopic thin plates and shells has a long and rich history, culminating with the Foeppl-von Karman equations in 1904, a precursor of general relativity characterized by a dimensionless coupling constant (the “Foeppl-von Karman number”) that can easily reach  vK […]

  • CMSA-QMMP-Seminar-05.18.22-1583x2048-1

    The Generalized Landau Paradigm (a review of generalized symmetries in condensed matter)

    Virtual

    https://www.youtube.com/watch?v=orT7vWJiCeo&list=PL0NRmB0fnLJQAnYwkpt9PN2PBKx4rvdup&index=10&t=15s Abstract: Recent advances in our understanding of symmetry in quantum many-body systems offer the possibility of a generalized Landau paradigm that encompasses all equilibrium phases of matter. This talk will be an elementary review of some of these developments, based on: https://arxiv.org/abs/2204.03045

  • CMSA-QMMP-Seminar-05.18.22-1583x2048-1

    Boundary conditions and LSM anomalies of conformal field theories in 1+1 dimensions

    Virtual

    Speaker: Linhao Li (ISSP, U Tokyo) Title: Boundary conditions and LSM anomalies of conformal field theories in 1+1 dimensions Abstract: In this talk, we will study a relationship between conformally invariant boundary conditions and anomalies of conformal field theories (CFTs) in 1+1 dimensions. For a given CFT with a global symmetry, we consider symmetric gapping […]