Chiral asymmetry in cold QED plasma in a strong magnetic field

Abstract

The interaction induced chiral asymmetry is calculated in cold QED plasma beyond the weak-field approximation. By making use of the recently developed Landau-level representation for the fermion self-energy, the chiral shift and the parity-even chiral chemical potential function are obtained with the help of numerical methods. The results are used to quantify the chiral asymmetry of the Fermi surface in dense QED matter. Because of the weakness of the QED interactions, the value of the asymmetry appears to be rather small even in the strongest magnetic fields and at the highest stellar densities. However, the analogous asymmetry can be substantial in the case of dense quark matter.

arXiv comment13 pages, 5 figures; published version with minor changes and references added

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• Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma
• Low energy constituent quark and pion effective couplings in a weak external magnetic field
• Pionic dispersion relations in the presence of a weak magnetic field
• SU(2) low energy quark effective couplings in weak external magnetic field
• Fermion self-energy in magnetized chirally asymmetric QED matter