The Chiral Critical Point in 3-Flavour QCD

Details The Chiral Critical Point in 3-Flavour QCD The Chiral Critical Point in 3-Flavour QCD

2001-10-11

arxiv.org/abs/hep-lat/0110039v1

Nucl.Phys.Proc.Suppl. 106 (2002) 423-425

Physics

High Energy Physics

High Energy Physics - Lattice

Talk given at 19th International Symposium on Lattice Field Theory (Lattice 2001), Berlin, Germany, 19-24 Aug 2001. 3 pages, L

Scientific paper

We determine the second order endpoint of the line of first order phase transitions, which occur in the light quark mass regime of 3-flavour QCD at finite temperature, and analyze universal properties of this chiral critical point. A detailed analysis of Binder cumulants and the joint probability distributions of energy like and ordering-field like observables confirms that the chiral critical point belongs to the universality class of the 3d Ising model. From a calculation with improved gauge and staggered fermion actions we estimate that the transition is first order for pseudo-scalar meson masses less than about 200 MeV.

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