Improved Lattice Actions with Chemical Potential

Details Improved Lattice Actions with Chemical Potential Improved Lattice Actions with Chemical Potential

1998-05-14

arxiv.org/abs/hep-lat/9805014v1

Nucl.Phys. A642 (1998) 275-281

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, LaTex, 8 figures, talk presented at workshop on "QCD at Finite Baryon Density", Bielefeld, April 27-30, 1998

Scientific paper

10.1016/S0375-9474(98)00526-0

We give a prescription how to include a chemical potential \mu into a general lattice action. This inclusion does not cause any lattice artifacts. Hence its application to an improved - or even perfect - action at \mu =0 yields an improved resp. perfect action at arbitrary \mu. For short-ranged improved actions, a good scaling behavior holds over a wide region, and the upper bound for the baryon density - which is known for the standard lattice actions - can be exceeded.

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