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  • Mathematical Aspects of Scattering Amplitudes Lecture

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

    Mathematical Aspects of Scattering Amplitudes Lecture Speaker: Stephan Stieberger, Max Planck Institute Title: One-loop Double Copy Relation in String Theory and Twisted (Co)homology

  • Mathematical Aspects of Scattering Amplitudes Lecture

    Harvard Science Center 1 Oxford Street, Cambridge, MA

    Mathematical Aspects of Scattering Amplitudes Lecture Speaker: Daniil Rudenko, U Chicago Title: Introduction to Cluster Polylogarithms Location: Harvard Science Center 310

  • Non-dispersive one-way signal amplification in sonic metamaterials

    Jefferson 256 17 Oxford Street, Cambridge, MA, United States

    Active Matter Seminar Speaker: Jayson Paulose, University of Oregon Title: Control of parametric amplification in space-time modulated mechanical metamaterials Abstract: Active mechanical metamaterials harbor acoustic signal processing functionalities that are impossible to achieve in passive structures. Amplifying an elastic wave as it passes through the material is a prominent example, with potential applications in acoustic signal […]

  • Symmetry Colloquia – Global Categorical Symmetries

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

    Symmetry Colloquia - Global Categorical Symmetries May 2, 2024 Location: Room G-10, CMSA, 20 Garden Street, Cambridge MA 02138 Speaker: Clay Còrdova, University of Chicago Title:  Particle-Soliton Degeneracies from Spontaneously Broken Non-Invertible Symmetry Abstract: We study non-invertible topological symmetry operators in massive quantum field theories in (1+1) dimensions. In phases where this symmetry is spontaneously broken […]

  • Symmetry Colloquia – Global Categorical Symmetries

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

    Symmetry Colloquia - Global Categorical Symmetries May 2, 2024 Location: Room G-10, CMSA, 20 Garden Street, Cambridge MA 02138 Speaker: Thomas Dumitrescu, UCLA Title: Symmetries, Invertible Field Theories, and Gauge Theory Phases Abstract: I will start with a brief overview of gauge theory phases in 3+1 dimensions through the lens of higher symmetries — in particular the realization […]

  • Symmetry Colloquia – Global Categorical Symmetries

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

    Symmetry Colloquia - Global Categorical Symmetries May 2, 2024 Location: Room G-10, CMSA, 20 Garden Street, Cambridge MA 02138 Speaker: Theo Johnson-Freyd, Dalhousie University and Perimeter Institute Title: The Universal Target Category Abstract: Hilbert's Nullstellensatz says that the complex numbers C satisfy a universal property among all R-algebras: every not-too-large nonzero commutative R-algebra maps to C. Deligne proved a similar statement […]

  • Mathematical Aspects of Scattering Amplitudes Lecture

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

    Mathematical Aspects of Scattering Amplitudes Lecture Speaker: Andrew McLeod, Edinburgh Title: Genealogical Constraints on Feynman Integrals

  • Liouville Theory and Weil-Petersson Geometry

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

    Colloquium Speaker: Sarah Harrison (Northeastern University) Title: Liouville Theory and Weil-Petersson Geometry Abstract: Two-dimensional conformal field theory is a powerful tool to understand the geometry of surfaces. Liouville conformal field theory in the classical (large central charge) limit encodes the geometry of the moduli space of Riemann surfaces. I describe an efficient algorithm to compute […]

  • On using ML for Economics

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

    CMSA Member Seminar Speaker: Sergiy Verstyuk Title: On using ML for Economics Abstract: I will introduce some tools from the field of machine learning and discuss how they can be leveraged to get a fresh perspective on economics.

  • Real-time observables in horizon thermodynamics

    General Relativity Seminar
    Virtual

    https://youtu.be/zxjuAlzuW78 General Relativity Seminar Speaker: Albert Law, Stanford Title: Real-time observables in horizon thermodynamics Abstract: Euclidean black hole 1-loop determinants have recently been shown to compute a renormalized thermal canonical partition function for free fields in Lorentzian signature. A key ingredient is a 'quasinormal mode (QNM) character', whose Fourier transform equals the renormalized spectral density of the […]

  • Mathematical Aspects of Scattering Amplitudes Lecture

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

    Mathematical Aspects of Scattering Amplitudes Lecture Speaker: Jacob Bourjaily, Penn State Title: The Algebraic and Transcendental Structure of Perturbative QFT