Twisted mass quarks and the phase structure of lattice QCD

Details Twisted mass quarks and the phase structure of lattice QCD Twisted mass quarks and the phase structure of lattice QCD

2004-06-28

arxiv.org/abs/hep-lat/0406039v2

Eur.Phys.J. C39 (2005) 421-433

Physics

High Energy Physics

High Energy Physics - Lattice

31 pages, 7 figures; published version with added clarifications

Scientific paper

10.1140/epjc/s2004-02078-9

The phase structure of zero temperature twisted mass lattice QCD is
investigated. We find strong metastabilities in the plaquette observable when
the untwisted quark mass assumes positive or negative values. We provide
interpretations of this phenomenon in terms of chiral symmetry breaking and the
effective potential model of Sharpe and Singleton.

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