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arXiv · 0906.5188

Anomalies at finite density and chiral fermions

R. V. Gavai·Sayantan Sharma
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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, $μ$. 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 $μ$ and compare it with the Bloch-Wettig idea.

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R. V. Gavai, Sayantan Sharma. 2010-02-16. Anomalies at finite density and chiral fermions. https://doi.org/10.1103/physrevd.81.034501

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