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  • Tensorial TQFT and disentangling modular Walker-Wang models

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

    Quantum Matter Seminar Speaker: Andreas Bauer  (Freie Universität Berlin) Title: Tensorial TQFT and disentangling modular Walker-Wang models Abstract: I will introduce simple "tensorial" definitions for many algebraic and categorical structures appearing in the classification of topological phases of matter. Such "tensorial TQFTs" will be defined as maps that associate tensors to geometric/topological objects of some […]

  • Quantum Gravity constraints beyond asymptotic regimes

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

    Member Seminar Speaker: Max Wiesner Title: Quantum Gravity constraints beyond asymptotic regimes Abstract: Not every effective field theory that is consistent in the absence of gravity can be completed to a consistent theory of quantum gravity. The goal of the Swampland program is to find general criteria that distinguish effective field theories, that can be obtained […]

  • Cynthia Dwork

    2023 Ding Shum Lecture

    Harvard Science Center 1 Oxford Street, Cambridge, MA

    On March 21, 2023, the CMSA hosted the fourth annual Ding Shum Lecture, given by Cynthia Dwork (Harvard SEAS and Microsoft Research). Time: 5:00-6:00 pm ET Location: Harvard University Science Center Hall D This event was be held in person and via Zoom webinar.   Title: Measuring Our Chances: Risk Prediction in This World and its […]

  • CMSA Colloquium 03.22.2023

    Synchronization in a Kuramoto Mean Field Game

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

    Speaker: Mete Soner (Princeton University) Title: Synchronization in a Kuramoto Mean Field Game Abstract:  Originally motivated by systems of chemical and biological oscillators, the classical Kuramoto model has found an amazing range of applications from neuroscience to Josephson junctions in superconductors, and has become a  key mathematical model to describe self organization in complex systems. These autonomous oscillators are […]

  • CMSA Probability Seminar 03.22.23

    Some rigorous results on the Lévy spin glass model

    Virtual

    Probability Seminar Speaker: Wei-Kuo Chen (Minnesota) Title: Some rigorous results on the Lévy spin glass model Abstract: The Lévy spin glass model, proposed by Cizeau-Bouchaud, is a mean-field model defined on a fully connected graph, where the spin interactions are formulated through a power-law distribution. This model is well-motivated from the study of the experimental metallic spin […]

  • CMSA GR Seminar 03.23.23

    New Phases of N=4 SYM

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

    https://youtu.be/Kt7n_0t6sgo General Relativity Seminar Speaker: Prahar Mitra (University of Cambridge) Title: New Phases of N=4 SYM Abstract: We construct new static solutions to gauged supergravity that, via the AdS/CFT correspondence, are dual to thermal phases in N=4 SYM at finite chemical potential. These solutions dominate the micro-canonical ensemble and are required to ultimately reproduce the microscopic entropy of AdS […]

  • CMSA QMMP 03.24.23

    Traversable wormhole dynamics on a quantum processor

    Hybrid - G10

    Quantum Matter Seminar Speaker: Alexander Zlokapa, MIT Title: Traversable wormhole dynamics on a quantum processor Abstract: The holographic principle, theorized to be a property of quantum gravity, postulates that the description of a volume of space can be encoded on a lower-dimensional boundary. The anti-de Sitter (AdS)/conformal field theory correspondence or duality is the principal example […]

  • CMSA/MATH Bi-Annual Gathering

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

    On Friday, March 24th, 4:30PM - 6PM, the CMSA will host the CMSA/MATH Bi-Annual Gathering for Harvard CMSA and Math affiliates in the Common Room at 20 Garden Street, Cambridge MA 02138.

  • CMSA Swampland Seminar 03.27.23

    Recent developments on the tidal Love numbers of black holes

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

    Swampland Seminar Speaker: Valerio De Luca (UPenn) Title: Recent developments on the tidal Love numbers of black holes Abstract: Tidal Love numbers describe the deformability of compact objects under the presence of external tidal perturbations, and are found to be exactly zero for black holes in pure General Relativity. This property is however fragile, since […]

  • Monotonicity of quasilocal mass for asymptotically flat Riemannian manifolds

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

    Member Seminar Speaker: Jue Liu Title: Monotonicity of quasilocal mass for asymptotically flat Riemannian manifolds Abstract: The study of quasilocal mass in general relativity has a long history. In previous papers by many authors we have a deep understanding of the properties of quasilocal mass such as positivity, rigidity and asymptotics etc. In this talk I will focus […]

  • CMSA Colloquium 03.29.2023

    Scattering amplitudes in quantum field theory

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

    Speaker: Ruth Britto (Trinity College Dublin) Title: Scattering amplitudes in quantum field theory Abstract: Particle collider experiments require a detailed description of scattering events, traditionally computed through sums of Feynman diagrams. However, it is not practical to evaluate Feynman diagrams directly for all significant scattering processes. Moreover, adding all diagrams reveals many cancellations: scattering amplitudes […]

  • CMSA GR Seminar 03.30.23

    Gravitational perturbations near to extreme Kerr

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

    https://youtu.be/VdfmeuDoofY General Relativity Seminar Speaker: Alejandra Castro (University of Cambridge) Title: Gravitational perturbations near to extreme Kerr Abstract: Gravitational perturbations of a black hole illustrate the invaluable synergy between theory, experiment, and numerical simulations in general relativity. A recent development in the theory side has been the identification of the relevant degrees of freedom describing the low energy […]