Non-trivial phase structure of Nf = 3 QCD with O(a)-improved Wilson fermion at zero temperature
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JLQCD collaboration recently started the Nf = 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.
Nuclear Physics B Proceedings Supplements
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Elsevier Science B.V.
Copyright (c) 2002 Elsevier Science B.V.
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Graduate School of Science