Chiral and Critical Behavior in Strong Coupling QCD

Details Chiral and Critical Behavior in Strong Coupling QCD Chiral and Critical Behavior in Strong Coupling QCD

2003-09-15

arxiv.org/abs/hep-lat/0309098v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 Pages, 3 figures, Lattice2003(nonzero)

Scientific paper

10.1016/S0920-5632(03)02647-1

We use a cluster algorithm to study the critical behavior of strongly coupled lattice QCD in the chiral limit. We show that the finite temperature chiral phase transition belongs to the O(2) universality class as expected. When we compute the finite size effects of the chiral susceptibility in the low temperature phase close to the transition, we find clear evidence for chiral singularities predicted by chiral perturbation theory (ChPT). On the other hand it is difficult to reconcile the quark mass dependence of various quantities near the chiral limit with ChPT.

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