Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2009-07-17
Phys.Lett.B682:240-245,2009
Physics
High Energy Physics
High Energy Physics - Lattice
Statistical errors for fit parameters and a footnote added. Final version to appear in Physics Letters B
Scientific paper
10.1016/j.physletb.2009.11.004
We study the expectation value of the phase of the fermion determinant for Wilson lattice fermions with chemical potential. We use quenched SU(3) ensembles and implement a recently proposed exact dimensional reduction of the fermion determinant. Ensembles at several temperatures below and above the phase transition are studied and we analyze the role of the quark mass, the temperature, the volume and the topological sectors. We compare our numerical results to predictions from chiral perturbation theory.
Danzer Julia
Gattringer Christof
Liptak Ludovit
Marinkovic Marina
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