The order of the chiral transition in N_f=2 QCD

Details The order of the chiral transition in N_f=2 QCD The order of the chiral transition in N_f=2 QCD

2004-08-06

arxiv.org/abs/hep-lat/0408008v1

Nucl.Phys.Proc.Suppl.140:541-546,2005

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 16 postscript figures, based on parallel talks presented at Lattice2004(non-zero), Fermilab, June 21-26, 2004

Scientific paper

10.1016/j.nuclphysbps.2004.11.36

A strategy is developed to investigate the order of the transition using finite size scaling and its relation to color confinement. An in-depth numerical investigation has been performed with KS fermions on lattices with N_t=4 and N_s=12,16,20,24,32 and quark masses am_q ranging from 0.01335 to 0.35. The specific heat and a number of susceptibilities have been measured and compared with the expectation of an O(4) second order and a first order phase transition. A second order O(4) is excluded, whilst data are consistent with a first order.

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