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SUMMARY:The Resurgence of Instantons in String Theory
DTSTART;VALUE=DATE-TIME:20120529T120000Z
DTEND;VALUE=DATE-TIME:20120529T130000Z
DTSTAMP;VALUE=DATE-TIME:20130518T221331Z
UID:indico-event-181024@cern.ch
DESCRIPTION:In order to study the weakly coupled regime of theory we often
  make use of perturbative expansion of the physical quantities of interest
 . But such expansions are often divergent and defined only as asymptotic s
 eries. In fact\, this divergence is connected to the existence of nonpertu
 rbative contributions\, i.e. instanton effects that cannot be captured by 
 a perturbative analysis. The theory of resurgence is a mathematical tool w
 hich allows us to effectively study this connection and its consequences. 
 In this talk we will make use of this theory in order to show how to const
 ruct a full nonperturbative solution from pertubative data. To  write this
  full  nonperturbative solution we need to introduce generalised multi-ins
 tanton sectors\, which can then be checked by precision tests on the asymp
 totic data. Finally\, the study of this nonperturbative sectors in matrix 
 models allows us to have a full picture of the phase diagram of this model
 s.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=181024
LOCATION:CERN TH Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=181024
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