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DTSTART:19700329T010000
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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:New renormalons from analytic trans-series: Lesson
 s from the Bethe ansatz - Ramon Miravitllas Mas (U
 niversity of Geneva)
DTSTART;TZID=Europe/London:20220913T113000
DTEND;TZID=Europe/London:20220913T123000
UID:TALK178106AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/178106
DESCRIPTION:Renormalons are factorial divergences arising in p
 erturbative series due to small and large momenta 
 in loop integrals of Feynman diagrams. When pertur
 bative computations at large order are unavailable
 \, the position of renormalons in the Borel plane 
 can be analyzed through the large N limit and the 
 operator product expansion\, which has been the st
 andard lore in the past decades. In this talk\, I 
 will explain how one can extract the position of r
 enormalons from the Bethe ansatz equations of inte
 grable quantum field theories\, and I will discuss
 &nbsp\;the disagreements one finds between the Bet
 he ansatz result and the renormalon prediction of 
 the operator product expansion.
LOCATION:No Room Required
CONTACT:
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