Anomaly at finite density and chiral fermions on lattice

Details Anomaly at finite density and chiral fermions on lattice Anomaly at finite density and chiral fermions on lattice

2009-10-15

arxiv.org/abs/0910.2784v1

PoS LAT2009:177,2009

Physics

High Energy Physics

High Energy Physics - Lattice

Talk presented at the XXVII International Symposium on Lattice Field Theory, July 26-31, 2009, Peking University, Beijing, Chi

Scientific paper

Using both perturbation theory in the Euclidean formalism as well as the non-perturbative Fujikawa's method, we verify that the chiral anomaly equation remains unaffected in continuum QCD in the presence of nonzero chemical potential, \mu. We extend our considerations to lattice fermions with exact chiral symmetry and discuss the consequences for the recent Bloch-Wettig proposal for the Dirac operator at finite chemical potential. We propose a new simpler method of incorporating \mu.

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