Abstract
We consider relativistic fermionic systems in lattice regularization out of equilibrium. The chiral magnetic conductivity σCME is calculated in a spatially infinite system for the case when the chiral chemical potential depends on time, while the system initially was in thermal equilibrium at a small but nonzero temperature. We find that the frequency-dependent σCME(ω) for any nonzero ω both in the limits ω≪T and ω≫T is equal to its conventional value 1 when the lattice model approaches the continuum limit. Notice that σCME=0 for the case when the chiral chemical potential does not depend on time at all. We therefore confirm that the limit of vanishing ω is not regular for the spatially infinite systems of massless fermions.
Original language | English |
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Article number | 074508 |
Journal | Physical Review D |
Volume | 106 |
Issue number | 7 |
DOIs | |
State | Published - 1 Oct 2022 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.