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SUMMARY:New renormalons from analytic trans-series: Lessons from the Bethe
  ansatz - Ramon Miravitllas Mas (University of Geneva)
DTSTART:20220913T103000Z
DTEND:20220913T113000Z
UID:TALK178106@talks.cam.ac.uk
DESCRIPTION:Renormalons are factorial divergences arising in perturbative 
 series due to small and large momenta in loop integrals of Feynman diagram
 s. When perturbative computations at large order are unavailable\, the pos
 ition of renormalons in the Borel plane can be analyzed through the large 
 N limit and the operator product expansion\, which has been the standard l
 ore in the past decades. In this talk\, I will explain how one can extract
  the position of renormalons from the Bethe ansatz equations of integrable
  quantum field theories\, and I will discuss&nbsp\;the disagreements one f
 inds between the Bethe ansatz result and the renormalon prediction of the 
 operator product expansion.
LOCATION:No Room Required
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