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SUMMARY:Paul Melotti (Université Paris Saclay)
DTSTART:20210510T160000Z
DTEND:20210510T170000Z
DTSTAMP:20260423T021436Z
UID:QM3/48
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/QM3/48/">The
  free-fermion eight-vertex model via dimers</a>\nby Paul Melotti (Universi
 té Paris Saclay) as part of Quantum Matter meets Maths (IST\, Lisbon)\n\n
 \nAbstract\nThe eight-vertex model is an useful description that generaliz
 es several spin systems\, as well as the more common six-vertex model\, an
 d others. In a special "free-fermion" regime\, it is known since the work 
 of Fan\, Lin\, Wu in the late 60s that the model can be mapped to non-bipa
 rtite dimers. However\, no general theory is known for dimers in the non-b
 ipartite case\, contrary to the extensive rigorous description of Gibbs me
 asures by Kenyon\, Okounkov\, Sheffield for bipartite dimers. In this talk
  I will show how to transform these non-bipartite dimers into bipartite on
 es\, on generic planar graphs. I will mention a few consequences: computat
 ion of long-range correlations\, criticality and critical exponents\, and 
 their "exact" application to Z-invariant regimes on isoradial graphs.\n
LOCATION:https://researchseminars.org/talk/QM3/48/
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