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  • Strategyproof-Exposing Mechanisms Descriptions

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Colloquium Speaker: Yannai Gonczarowski (Harvard) Title: Strategyproof-Exposing Mechanisms Descriptions Abstract: One of the crowning achievements of the field of Mechanism Design has been the design and usage of the so-called "Deferred Acceptance" matching algorithm. Designed in 1962 and awarded the Nobel Prize in 2012, this algorithm has been used around the world in settings ranging […]

  • Breaking the one-mind-barrier in mathematics using formal verification

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    https://youtu.be/D7dqadF5k9Q New Technologies in Mathematics Seminar Speaker: Johan Commelin, Mathematisches Institut, Albert-Ludwigs-Universität Freiburg Title: Breaking the one-mind-barrier in mathematics using formal verification Abstract: In this talk I will argue that formal verification helps break the one-mind-barrier in mathematics. Indeed, formal verification allows a team of mathematicians to collaborate on a project, without one person understanding all parts of […]

  • CMSA GR Seminar 09.15.22

    The Gregory-Laflamme instability of black strings revisited

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    General Relativity Seminar Title: The Gregory-Laflamme instability of black strings revisited   Abstract: In this talk I will discuss our recent work that reproduces and extends the famous work of Lehner and Pretorius on the end point of the Gregory-Laflamme instability of black strings. We consider black strings of different thicknesses and our numerics allow us to get closer to the singularity than ever before. In […]

  • Derivation of AdS/CFT for Vector Models

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Member Seminar Speaker: Shai Chester Title: Derivation of AdS/CFT for Vector Models Abstract: We derive an explicit map at finite N between the singlet sector of the free and critical O(N) and U(N) vector models in any spacetime dimension above two, and a bulk higher spin theory in anti-de Sitter space in one higher dimension. For the boundary […]

  • The story of the information paradox

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Swampland Seminar Speaker: Samir Mathur (Ohio State) Title: The story of the information paradox Abstract:  In 1975 Hawking argued that black hole evaporation would lead to a loss of unitarity in quantum theory.  The small corrections theorem made Hawking's argument into a precise statement: if semiclassical physics hold to leading order in any gently curved region of […]

  • CMSA Topological Seminar 09.21.22

    Geometric test for topological states of matter

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    https://youtu.be/MxXD2yA2pxQ Topological Quantum Matter Seminar Speaker: Semyon Klevtsov, University of Strasbourg Title: Geometric test for topological states of matter Abstract: We generalize the flux insertion argument due to Laughlin, Niu-Thouless-Tao-Wu, and Avron-Seiler-Zograf to the case of fractional quantum Hall states on a higher-genus surface. We propose this setting as a test to characterise the robustness, or […]

  • CMSA Active Matter

    Limit and potential of adaptive immunity

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Active Matter Seminar Speaker: Shenshen Wang, UCLA Title:  Limit and potential of adaptive immunity Abstract: The adaptive immune system is able to learn from past experiences to better fit an unforeseen future. This is made possible by a diverse and dynamic repertoire of cells expressing unique antigen receptors and capable of rapid Darwinian evolution within an individual. However, […]

  • CMSA Colloquium

    Moduli spaces of graphs

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Colloquium Speaker: Melody Chan, Brown Title: Moduli spaces of graphs Abstract: A metric graph is a graph—a finite network of vertices and edges—together with a prescription of a positive real length on each edge. I'll use the term "moduli space of graphs" to refer to certain combinatorial spaces—think simplicial complexes—that furnish parameter spaces for metric […]

  • CMSA GR Seminar

    A scale-critical trapped surface formation criterion for the Einstein-Maxwell system

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    https://youtu.be/1v9STFWqArQ General Relativity Seminar Speaker: Nikolaos Athanasiou Title: A scale-critical trapped surface formation criterion for the Einstein-Maxwell system Abstract: Few notions within the realm of mathematical physics succeed in capturing the imagination and inspiring awe as well as that of a black hole. First encountered in the Schwarzschild solution, discovered a few months after the […]

  • CMSA/MATH Fall Gathering

    Harvard Science Center 1 Oxford Street, Cambridge, MA

    CMSA/MATH Fall Gathering Friday, Sep 23, 2022 4:30–6:00 pm All CMSA and Math affiliates are invited.

  • Random determinants, the elastic manifold, and landscape complexity beyond invariance

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Member Seminar Speaker: Ben McKenna Title: Random determinants, the elastic manifold, and landscape complexity beyond invariance Abstract: The Kac-Rice formula allows one to study the complexity of high-dimensional Gaussian random functions (meaning asymptotic counts of critical points) via the determinants of large random matrices. We present new results on determinant asymptotics for non-invariant random matrices, and […]

  • CMSA QMMP Seminar 09.26.22

    Candidates for Non-Supersymmetric Dualities

    Virtual

    https://www.youtube.com/watch?v=c1ED61O0f0Y&list=PL0NRmB0fnLJQAnYwkpt9PN2PBKx4rvdup&index=2 Quantum Matter in Mathematics and Physics Speaker: Avner Karasik (University of Cambridge, UK) Title: Candidates for Non-Supersymmetric Dualities Abstract: In the talk I will discuss the possibility and the obstructions of finding non-supersymmetric dualities for 4d gauge theories. I will review consistency conditions based on Weingarten inequalities, anomalies and large N, and clarify some […]