Phase structure for lattice fermions with flavored chemical potential terms

Tatsuhiro Misumi

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7 Citations (Scopus)


We discuss the chiral phase diagram in the parameter space of lattice QCD with minimal-doubling fermions, which can be seen as lattice fermions with flavored chemical potential terms. We study strong-coupling lattice QCD with the Karsten-Wilczek formulation, which has one relevant parameter μ 3 as well as gauge coupling and a mass parameter. We find a nontrivial chiral phase structure with a second-order phase transition between chiral symmetric and broken phases. To capture the whole structure of the phase diagram, we study the related lattice Gross-Neveu model. The result indicates that the chiral phase transition also exists in the weak-coupling region. From these results we speculate on the μ 3-g2 chiral phase diagram in lattice QCD with minimal-doubling fermions, and discuss their application to numerical simulations.

Original languageEnglish
Article number68
JournalJournal of High Energy Physics
Issue number8
Publication statusPublished - 2012 Jan 1



  • Lattice Gauge Field Theories
  • Lattice QCD
  • Strong Coupling Expansion

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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