Domain-wall and overlap fermions at nonzero quark chemical potential

Details Domain-wall and overlap fermions at nonzero quark chemical potential Domain-wall and overlap fermions at nonzero quark chemical potential

2007-09-28

arxiv.org/abs/0709.4630v1

Phys.Rev.D76:114511,2007

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, no figures

Scientific paper

10.1103/PhysRevD.76.114511

We have recently given a construction of the overlap Dirac operator at nonzero quark chemical potential. Here, we introduce a quark chemical potential in the domain-wall fermion formalism and show that our earlier result is reproduced if the extent of the fifth dimension is taken to infinity and its lattice spacing is taken to zero. We also extend this result to include a bare quark mass, consider its continuum limit, and prove a number of properties of the overlap operator at nonzero quark chemical potential. In particular, we show that the relation between the anomaly and the index of the overlap operator remains valid.

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