学术报告

学术活动

学术报告
01/06 2021
  • Title题目 (Online Seminar) Integrability for Feynman Integrals
  • Speaker报告人
  • Date日期
  • Venue地点
  • Abstract摘要

    CAS Key Laboratory of Theoretical Physics

    Institute of Theoretical Physics

    Chinese Academy of Sciences

    Online Seminar

    Title

    题目

    Integrability for Feynman Integrals

    Speaker

    报告人

    Florian Loebbert

    Affiliation

    所在单位

    Humboldt University of Berlin

    Date

    日期

     2021年1月6日(星期三)15:00

    Venue

    地点

    https://zoom.us/j/97842384446

    Contact Person

    所内联系人

    何颂

    Abstract

    摘要

     I give an overview of the Yangian symmetry of Feynman integrals. First I review the connection between AdS/CFT integrability and the Yangian symmetry of massless Feynman graphs. Exploiting the Yangian constraints, I discuss the idea to bootstrap Feynman integrals on different examples. Then I show that also in the massive case large classes of Feynman integrals are constrained by a Yangian extension of dual conformal symmetry. When translated to momentum space, this leads to a novel massive generalization of ordinary conformal symmetry. Finally, I argue that these features of massive Feynman integrals can be understood as the integrability of planar scattering amplitudes in a massive version of the fishnet theory, which is obtained as a double-scaling limit of N=4 super Yang-Mills theory on the Coulomb branch.

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