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SUMMARY:A two-dimensional window into non-perturbative physics
DTSTART:20231019T141500Z
DTEND:20231019T161500Z
DTSTAMP:20260827T095200Z
UID:indico-event-408@indico.hiskp.uni-bonn.de
DESCRIPTION:Speakers: Guglielmo Lockhart (Uni Bonn)\n\nQuantum field theor
 ies at strong coupling exhibit a host of phenomena that are not immediatel
 y visible to perturbation theory. One surprising feature is that\, beside 
 point particles\, the degrees of freedom of strongly coupled QFTs in some 
 cases include two-dimensional\, string-like excitations. In the case of su
 persymmetric theories\, which are the subject of this talk\, string theory
  provides a natural setup for studying this class of extended objects\, wh
 ich are realized by wrapping membranes in an internal space. I will argue 
 that the string-like degrees of freedom are powerful probes into the physi
 cs of strongly coupled QFTs\, which encode detailed and often subtle prope
 rties about their particle spectrum and symmetries in a natural way. The e
 xistence of these string-like excitations gives rise to a rich interplay b
 etween quantum field theory\, the enumerative geometry of the internal spa
 ce\, and the theory of modular forms. In the course of the talk we will al
 so see how the properties of various classes of modular forms one encounte
 rs\, which encode the spectrum of excitations of the strings\, are intimat
 ely tied to the properties of the quantum field theories where they arise.
 \n\nhttps://indico.hiskp.uni-bonn.de/event/408/
URL:https://indico.hiskp.uni-bonn.de/event/408/
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