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DTSTAMP:20260404T052415Z
UID:1606231800@ist.ac.at
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DESCRIPTION:Speaker: Christian Webb\nhosted by M. Beiglböck\, N. Berestyck
 i\, L. Erdös\, J. Maas\, F. Toninelli\nAbstract: This talk will be about 
 a model that illustrates that statistical mechanics and field theory can 
 be quite special in two dimensions -- even without conformal invariance.
  More precisely\, I will discuss a special case of a prediction of S. 
 Coleman which identifies correlation functions of the massless sine-Gor
 don model (with suitably chosen parameters) and massive free fermions. Th
 is is an instance of bosonization: a (interacting) bosonic field theory i
 s expressed in terms of a (non-interacting) fermionic model. It also dem
 onstrates that despite being a non-trivial (and non-conformal) field theo
 ry\, the sine-Gordon model at the free fermion point remains integrable (c
 orrelation functions are explicit). As a consequence we also obtain expon
 ential decay of correlations for the massless sine-Gordon model at the fre
 e fermion point. This is joint work with Roland Bauerschmidt (Cambdridge):
  https://arxiv.org/pdf/2010.07096.pdf
LOCATION:Online via Zoom\, ISTA
ORGANIZER:birgit.oosthuizen-noczil@ist.ac.at
SUMMARY:Christian Webb: On the Coleman correspondence at the free fermion p
 oint
URL:https://talks-calendar.ista.ac.at/events/2983
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