Philippe de Forcrand (Zurich):
QCD at finite temperature and density in the strong coupling limit
Abstract:
Due to asymptotic freedom, the continuum
limit of lattice QCD is obtained at zero bare coupling. In this regime however, the
sign problem at finite baryon density has restricted the study of the QCD phase
diagram to small densities. On the other hand, in the opposite limit of infinite
bare coupling, the sign problem can be dramatically reduced, and further algorithmic
progress now allows a determination of the full QCD phase diagram, which is not too
different from that expected in continuum QCD. Moreover, comparison can be made with
two decades of analytic meanfield approximations.
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