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SUMMARY:Si Li/李思 (Tsinghua University)
DTSTART:20201227T030000Z
DTEND:20201227T040000Z
DTSTAMP:20260423T040106Z
UID:iccm2020/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/iccm2020/2/"
 >Configuration space integrals and index theory</a>\nby Si Li/李思 (Tsin
 ghua University) as part of ICCM 2020\n\n\nAbstract\nWe explain a geometri
 c formulation of the low energy effective theory of sigma models in terms 
 of bundles of factorization algebras. Appropriate regularization for Integ
 rals over configuration spaces arises naturally from quantum field theorie
 s and will in general give rise to index type theories. As a case study in
  dimension two\,  we introduce a geometric renormalization method for re
 gularized integrals over configuration spaces of Riemann surfaces in 2d ch
 iral quantum field theory. It provides a mathematical tool to formulate c
 orrelation functions of non-local operators in a chiral CFT that will lead
  to an algebraic analogue of elliptic index theory.\n
LOCATION:https://researchseminars.org/talk/iccm2020/2/
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