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  • The Einstein-Vlasov system in a large data regime

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

    https://youtu.be/gtvSMhYhD3w General Relativity Seminar Speaker: Nikolaos Athanasiou, University of Crete, Greece Title: The Einstein-Vlasov system in a large data regime Abstract: In this talk, our object of study is the Einstein-Vlasov system with a massless Vlasov matter field. Complementing various important works obtaining the stability of Minkowski spacetime as a solution to this system, we […]

  • Mathematical Physics and Algebraic Geometry Seminar

    The Quantum GIT conjecture

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

    https://youtu.be/_LDiw4Lq-9c Mathematical Physics and Algebraic Geometry Seminar Speaker: Daniel Pomerleano (UMass Boston) Title: The Quantum GIT conjecture Abstract: Let X be a Fano variety with G action. The quantum GIT conjecture predicts a formula for the quantum cohomology of "anti-canonical" GIT quotients X//G in terms of the equivariant quantum cohomology of X. The formula is […]

  • Nonlinear Bosonization of (Non-)Fermi Liquids

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

    Quantum Field Theory and Physical Mathematics Seminar Speaker: Yi-Hsien Du (MIT) Title: Nonlinear Bosonization of (Non-)Fermi Liquids Abstract: Fermi liquid theory is a cornerstone of condensed matter physics. I will show how to formulate Fermi liquid theory as an effective field theory. In this approach, the space of low-energy states of a Fermi liquid is identified with a […]

  • Mathematical Physics and Algebraic Geometry Seminar

    Tyurin degenerations, Relative Lagrangian foliations and categorification of DT invariants

    Virtual

    https://youtu.be/O2U7elI0mbo Mathematical Physics and Algebraic Geometry Seminar Speaker: Artan Sheshmani (BIMSA) Title: Tyurin degenerations, Relative Lagrangian foliations and categorification of DT invariants Abstract: We discuss construction of a derived Lagrangian intersection theory of moduli spaces of perfect complexes, with support on divisors on compact Calabi-Yau threefolds. Our goal is to compute deformation invariants associated to a fixed […]

  • Workshop on Symmetries and Gravity

    CMSA 20 Garden Street Cambridge, Massachusetts 02138 United States

    Workshop on Symmetries and Gravity Dates: January 21-24, 2025 Location: Harvard CMSA, 20 Garden Street, Cambridge, MA 02138 Organizers: Ibrahima Bah (Johns Hopkins University), Patrick Jefferson (Johns Hopkins University), Yiming Chen (Stanford University) Description: There is a widespread belief, that has its origins in work from the 70s, that a theory of quantum gravity cannot […]

  • CMSA Q&A Seminar

    CMSA Q&A Seminar: Edgar Shaghoulian

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

    CMSA Q&A Seminar Speaker: Edgar Shaghoulian, UC Santa Cruz Topic: What are the main questions in quantum gravity today?

  • Foundation Seminar

    Joint BHI/CMSA Foundation Seminar: Quantum Criticality in Black Hole Dynamics

    Black Hole Initiative, 20 Garden Street, Cambridge MA CMSA, 20 Garden Street, Cambridge, MA, United States

    Joint BHI/CMSA Foundation Seminar Location: BHI Seminar Room Speaker: Uri Kol, Harvard CMSA Title: Quantum Criticality in Black Hole Dynamics Abstract: Black hole perturbation theory captures a few important effects in the dynamics of binary mergers, such as tidal deformations and the decay of ringdown modes, as well as the physics of the photon ring. […]

  • A homotopy of 2d SCFTs and an implication for Topological Modular Forms

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

    Quantum Field Theory and Physical Mathematics Seminar Speaker: Vivek Saxena (YITP Stony Brook and NHETC Rutgers) Title: A homotopy of 2d SCFTs and an implication for Topological Modular Forms Abstract: The Segal-Stolz-Teichner conjecture states that there exists an isomorphism between deformation classes of two-dimensional N=(0,1) superconformal field theories (SCFTs) and generalized cohomology classes known as […]

  • Mathematical Physics and Algebraic Geometry Seminar

    Stochastic Process and Noncommutative Geometry

    Hybrid

    Mathematical Physics and Algebraic Geometry Seminar Speaker: Zichang Wang (Tsinghua University) Title: Stochastic Process and Noncommutative Geometry Abstract: We explain a stochastic approach to topological field theory and present a case study of quantum mechanical model and its relation to noncommutative geometry. For detail reference, see https://arxiv.org/abs/2501.12360    

  • CMSA/MATH Welcome Back Gathering

    CMSA 20 Garden Street Cambridge, Massachusetts 02138 United States

    Thursday, Jan. 30, 2025 4:00 pm All CMSA and Math affiliates are invited.  

  • Smooth projective fibrations over the projective line and their sections

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

    Member Seminar Speaker: Iacopo Brivio Title: Smooth projective fibrations over the projective line and their sections Abstract: Suppose $f\colon X\to \mathbf{CP}^1$ is a smooth projective fibration, is it then true that $f$ has a section? This deceptively simple result was established by Seidel and McDuff using deep methods of symplectic geometry. Alex Pieloch recently generalized this to morphisms […]