The chiral transition in two-flavor QCD

Details The chiral transition in two-flavor QCD The chiral transition in two-flavor QCD

2005-10-03

arxiv.org/abs/hep-lat/0510012v1

PoS LAT2005 (2005) 158

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 4 figures, PoS style. Talk presented at Lattice 2005 (Nonzero temperature and density), Dublin, Ireland, July 25-30

Scientific paper

QCD with N_f=2 is a specially interesting system to investigate the chiral transition. The order of the transition has still not been established. We report the results of an in-depth numerical investigation performed with staggered fermions on lattices with L_t=4 and L_s=12,16,20,24,32 and quark masses am_q ranging from 0.01335 to 0.307036. Using finite-size techniques we compare the scaling behavior of a number of thermodynamical susceptibilities with the expectations of O(4) and O(2) universality classes. Clear disagreement is observed. Indications of a first order transition are found.

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