Today

  • 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 […]

  • Big Data 2022_web

    Big Data Conference 2022

    Virtual

    https://youtu.be/lmgwSxwDAHg On August 26, 2022 the CMSA hosted our eighth annual Conference on Big Data. The Big Data Conference features speakers from the Harvard community as well as scholars from across the globe, with talks focusing on computer science, statistics, math and physics, and economics. The 2022 Big Data Conference took place virtually on Zoom. […]

  • Transport in large-N critical Fermi surface

    Virtual

    Speaker: Haoyu Guo (Harvard) Title: Transport in large-N critical Fermi surface Abstract: A Fermi surface coupled to a scalar field can be described in a 1/N expansion by choosing the fermion-scalar Yukawa coupling to be random in the N-dimensional flavor space, but invariant under translations. We compute the conductivity of such a theory in two spatial […]

  • Recent Advances on Maximum Flows and Minimum-Cost Flows

    Virtual

    Interdisciplinary Science Seminar Speaker: Yang P. Liu Title: Recent Advances on Maximum Flows and Minimum-Cost Flows Abstract: We survey recent advances on computing flows in graphs, culminating in an almost linear time algorithm for solving minimum-cost flow and several other problems to high accuracy on directed graphs. Along the way, we will discuss intuitions from linear […]

  • Anomalies, dynamics and phases in strongly-coupled chiral gauge theories: Recent developments

    Virtual

    Speaker: Kenichi Konishi (UNIPI.IT) Title: Anomalies, dynamics and phases in strongly-coupled chiral gauge theories: Recent developments Abstract: After many years of efforts, still very little is known today about the physics of strongly-coupled chiral gauge theories in four dimensions, in spite of an important role they might play in the physics of fundamental interactions beyond […]

  • CMSA-2-600x338-1

    2022 Summer Introduction to Mathematical Research

    Virtual

    The Math Department and Harvard’s Center of Mathematical Sciences and Applications (CMSA) will be running a math program/course for mathematically minded undergraduates this summer. The course will be run by Dr. Yingying Wu from CMSA. Here is a description: Summer Introduction to Mathematical Research (sponsored by CMSA and the Harvard Math Department) In this course, we will start […]

  • CMSA-QMMP-Seminar-05.18.22-1583x2048-1

    Boundary conditions and LSM anomalies of conformal field theories in 1+1 dimensions

    Virtual

    Speaker: Linhao Li (ISSP, U Tokyo) Title: Boundary conditions and LSM anomalies of conformal field theories in 1+1 dimensions Abstract: In this talk, we will study a relationship between conformally invariant boundary conditions and anomalies of conformal field theories (CFTs) in 1+1 dimensions. For a given CFT with a global symmetry, we consider symmetric gapping […]

  • CMSA-QMMP-Seminar-05.18.22-1583x2048-1

    The Generalized Landau Paradigm (a review of generalized symmetries in condensed matter)

    Virtual

    https://www.youtube.com/watch?v=orT7vWJiCeo&list=PL0NRmB0fnLJQAnYwkpt9PN2PBKx4rvdup&index=10&t=15s Abstract: Recent advances in our understanding of symmetry in quantum many-body systems offer the possibility of a generalized Landau paradigm that encompasses all equilibrium phases of matter. This talk will be an elementary review of some of these developments, based on: https://arxiv.org/abs/2204.03045

  • Inflation and light Dark Matter constraints from the Swampland

    Virtual

    Abstract: I will explore the interplay between Swampland conjectures and models of inflation and light Dark Matter. To that end, I will briefly review the weak gravity conjecture (WGC) and the related Festina Lente (FL) bound. These have implications for light darkly and milli-charged particles and can disfavor a large portion of parameter space. The FL bound […]

  • Machine Learning the Gravity Equation for International Trade

    Virtual

    Member Seminar Speaker: Sergiy Verstyuk Title: Machine Learning the Gravity Equation for International Trade Abstract: We will go through modern deep learning methods and existing approaches to their interpretation. Next, I will describe a graph neural network framework. You will also be introduced to an economic analog of gravity. Finally, we will see how these […]

  • CMSA-Active-Matter-Seminar-04.28.22

    Building active nematic and active polar liquids out of biological machines

    Virtual

    Speaker: Guillaume Duclos (Brandeis) Title: Building active nematic and active polar liquids out of biological machines Abstract: Active matter describes out-of-equilibrium materials composed of motile building blocks that convert free energy into mechanical work. The continuous input of energy at the particle scale liberates these systems from the constraints of thermodynamic equilibrium, leading to emergent collective behaviors not found in passive materials. In this talk, I […]

  • CMSA-QMMP-Seminar-04.28.22-1583x2048

    Aspects of 4d supersymmetric dynamics and geometry

    Virtual

    https://www.youtube.com/watch?v=c6_RbJS8CoM&list=PL0NRmB0fnLJQAnYwkpt9PN2PBKx4rvdup&index=14&t=2s Abstract: We will overview the program of geometrically engineering four dimensional supersymmetric QFTs as compactifications of six dimensional SCFTs. In particular we will discuss how strong coupling phenomena in four dimensions, such as duality and emergence of symmetry, can be better understood in such geometric constructions.