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  • Quantum Matter in Mathematics and Physics Seminar

    Improving Mean-Field Theory for Quantum Magnets

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

    Quantum Matter in Mathematics and Physics Seminar Speaker: Junyi Zhang, Johns Hopkins University Title: Improving Mean-Field Theory for Quantum Magnets Abstract: Frustrated magnets have garnered significant attention because of their potential to host exotic spin liquids, while many real material candidates exhibit magnetic orders.  Due to their proximity to spin liquid phases, the semiclassical descriptions […]

  • Colloquium

    Errors and Correction in Cumulative Knowledge

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

    Colloquium Speaker: Madhu Sudan, Harvard University Title: Errors and Correction in Cumulative Knowledge Abstract: Societal accumulation of knowledge is a complex, and arguably error-prone, process. The correctness of new units of knowledge depends not only on the correctness of the new reasoning, but also on the correctness of old units that the new one builds […]

  • Member Seminar

    Quasilocal mass for general domains in space

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

    CMSA Member Seminar Speaker: Jue Liu Title: Quasilocal mass for general domains in space Abstract: Diffeomorphism-invariant quasilocal mass in classical general relativity has been studied for decades, but it is still an open problem how to define quasi-local mass for general domains with multiple boundaries in space. Using the Hamiltonian formulation, we will provide a new way […]

  • Mathematical Aspects of Scattering Amplitudes Lecture

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

    Mathematical Aspects of Scattering Amplitudes Lecture Speaker: James Drummond, University of Southampton Title: Multiple light-like Wilson loops in N=4 super Yang-Mills theory

  • Mathematical Aspects of Scattering Amplitudes Lecture

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

    Mathematical Aspects of Scattering Amplitudes Lecture Speaker: Matteo Parisi, Harvard CMSA Title: The amplituhedron and cluster algebras

  • Algebraic Geometry in String Theory Seminar

    Mirror symmetry and log del Pezzo surfaces

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

    Algebraic Geometry in String Theory Seminar Speaker: Franco Rota, University of Glasgow Title: Mirror symmetry and log del Pezzo surfaces Abstract: The homological mirror symmetry conjecture predicts a duality, expressed in terms of categorical equivalences, between the complex geometry of a variety X (the B side) and the symplectic geometry of its mirror object Y (the A side). Motivated […]

  • Controlling chaotic advection in 2D active nematics

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

    Active Matter Seminar Speaker: Kevin Mitchell, University of California, Merced Title: Controlling chaotic advection in 2D active nematics Abstract: Recent years have seen a surge of interest in active materials, in which energy injected at the microscale gives rise to mesoscale coherent motion. One prominent example is an active 2D "liquid crystal" composed of microtubules in […]

  • Geometry of Generalized Lienard Equations, Contact Geometry and Metriplectic Structure

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

    Speaker: Partha Guha, Khalifa University, Abu Dhabi Title: Geometry of Generalized Lienard Equations, Contact Geometry and Metriplectic Structure Abstract: We start with a self-contained brief review of the construction of non-standard Lagrangian and Hamiltonian structures using the Jacobi Last Multiplier for the (generalized) reduced Lienard equations satisfying Chiellini integrability condition, we then explore its connection […]

  • Quantum Matter in Mathematics and Physics Seminar

    Love and Naturalness

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

    Quantum Matter in Mathematics and Physics Seminar Speaker: Mikhail Ivanov (MIT) Title: Love and Naturalness Abstract: Recent progress in gravitational wave astronomy has spurred the development of efficient tools to describe gravitational binary dynamics. One such tool is classical worldline effective field theory (EFT). In the first part of my talk, I will show how to […]

  • Mathematical Aspects of Scattering Amplitudes Lecture

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

    Mathematical Aspects of Scattering Amplitudes Lecture Speaker: Michael Borinsky, ETH Zurich Title: On the Euler characteristic of the commutative graph complex and the top-weight cohomology of the moduli space of curves

  • Mathematical Aspects of Scattering Amplitudes Lecture

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

    Mathematical Aspects of Scattering Amplitudes Lecture Speaker: Chaim Even-Zohar, Technion Title: Amplituhedron tiles and twistor polynomials

  • Amplituhedra, Cluster Algebras, and Positive Geometry

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

    Amplituhedra, Cluster Algebras, and Positive Geometry Dates: May 29-31, 2024 Location: Harvard CMSA, 20 Garden Street, Cambridge MA 02138 & via Zoom In recent years, a remarkable paradigm shift has occurred in understanding quantum observables in particle physics and cosmology, revealing their emergence from underlying novel mathematical objects known as positive geometries. The conference will […]