Exact Chiral Fermions and Finite Density on Lattice

Details Exact Chiral Fermions and Finite Density on Lattice Exact Chiral Fermions and Finite Density on Lattice

2008-09-26

arxiv.org/abs/0809.4535v1

PoS LATTICE2008:177,2008

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 3 figures, talk presented at The XXVI International Symposium on Lattice Field Theory, July 14 - 19, 2008, Williamsbu

Scientific paper

Any mu^2-divergence is shown analytically to be absent for a class of actions for Overlap and Domain Wall Fermions with nonzero chemical potential. All such actions are, however, shown to violate the chiral invariance. While the parameter M of these actions can be shown to be irrelevant in the continuum limit, as expected, it is shown numerically that the continuum limit can be reached with relatively coarser lattices for M in the range of 1.5-1.6.

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