Non-trivial phase structure of N_f=3 QCD with O(a)-improved Wilson fermion at zero temperature

2001/10/15 by JLQCD Collaboration, S. Aoki, R. Burkhalter +15
Physics and Astronomy · #hep-lat

paper · pdf

published as Nucl.Phys.Proc.Suppl. 106 (2002) 263-265 · 3 pages, 5 figures, Lattice2001(spectrum)

arxiv created 2001/10/15 · arxiv updated 2009/11/30

Abstract

JLQCD collaboration recently started the N_f=3 QCD simulations with the O(a)-improved Wilson fermion action employing an exact fermion algorithm developed for odd number of quark flavors. It is found that this theory has an unexpected non-trivial phase structure in the (β,κ) plane even at zero temperature. A detailed study is made to understand the nature of the observed phase transitions and to find the way of avoiding untolerably large lattice artifacts associated with the phase transition.

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