Anomalies at finite density and chiral fermions
High Energy Physics - Lattice
2010-03-04 v4 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
Using perturbation theory in the Euclidean (imaginary time) formalism as well as the non-perturbative Fujikawa method, we verify that the chiral anomaly equation remains unaffected in the presence of nonzero chemical potential, . We extend our considerations to fermions with exact chiral symmetry on the lattice 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 and compare it with the Bloch-Wettig idea.
Keywords
Cite
@article{arxiv.0906.5188,
title = {Anomalies at finite density and chiral fermions},
author = {R. V. Gavai and Sayantan Sharma},
journal= {arXiv preprint arXiv:0906.5188},
year = {2010}
}
Comments
12 pages, 3 figures,some typos corrected, a better proof for the \mu independence of anomaly is given in section IIB, v4: the published version