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SUMMARY:Jorge Russo (ICREA\, Barcelona)
DTSTART:20201203T151500Z
DTEND:20201203T170000Z
DTSTAMP:20260423T022812Z
UID:LIJC/22
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/LIJC/22/">Ph
 ases of unitary matrix models and lattice QCD in two dimensions</a>\nby Jo
 rge Russo (ICREA\, Barcelona) as part of London Integrability Journal Club
 \n\n\nAbstract\nWe investigate the different large N phases of a deformed 
 Gross-Witten-Wadia U(N) matrix model. The deformation\, which leads to a s
 olvable model\, corresponds to the addition of characteristic polynomial i
 nsertions and mimics the one-loop determinant of fermion matter. In one ve
 rsion of the model\, the GWW phase transition is smoothed out and it becom
 es a crossover. In another version\, the phase transition occurs along a c
 ritical line in the two-dimensional parameter space spanned by the 't~Hoof
 t coupling $\\lambda $ and the Veneziano parameter $\\tau $. A calculation
  of the $\\beta $ function shows the existence of an IR stable fixed point
 .\n
LOCATION:https://researchseminars.org/talk/LIJC/22/
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