Impact of domain walls on the chiral magnetic effect in hot QCD matter
Abstract
The chiral magnetic effect (CME)—the separation of positive and negative electric charges along the direction of the external magnetic field in quark-gluon plasma and other topologically nontrivial media—is a consequence of the coupling of electrodynamics to the topological gluon field fluctuations that form metastable $CP$-odd domains. In phenomenological models it is usually assumed that the domains are uniform and the influence of the domain walls on the electric current flow is not essential. This article challenges the latter assumption. A simple model consisting of a uniform spherical domain in a uniform time-dependent magnetic field is introduced and analytically solved. It is shown that (i) no electric current flows into or out of the domain; (ii) the charge separation current, viz. the total electric current flowing inside the domain in the external field direction, is a dissipative Ohm current; (iii) the CME effect can be produced either by the anomalous current or by the boundary conditions on the domain wall; and (iv) the charge separation current oscillates in plasma long after the external field decays. These properties are qualitatively different from the CME in an infinite medium.
- Authors:
- Publication Date:
- Research Org.:
- Iowa State Univ., Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1454660
- Alternate Identifier(s):
- OSTI ID: 1503829
- Grant/Contract Number:
- FG02-87ER40371
- Resource Type:
- Published Article
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Name: Physical Review C Journal Volume: 97 Journal Issue: 6; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; anomalies; electromagnetic interactions; nuclear matter; quark-gluon plasma; chiral symmetry
Citation Formats
Tuchin, Kirill. Impact of domain walls on the chiral magnetic effect in hot QCD matter. United States: N. p., 2018.
Web. doi:10.1103/PhysRevC.97.064914.
Tuchin, Kirill. Impact of domain walls on the chiral magnetic effect in hot QCD matter. United States. https://doi.org/10.1103/PhysRevC.97.064914
Tuchin, Kirill. Mon .
"Impact of domain walls on the chiral magnetic effect in hot QCD matter". United States. https://doi.org/10.1103/PhysRevC.97.064914.
@article{osti_1454660,
title = {Impact of domain walls on the chiral magnetic effect in hot QCD matter},
author = {Tuchin, Kirill},
abstractNote = {The chiral magnetic effect (CME)—the separation of positive and negative electric charges along the direction of the external magnetic field in quark-gluon plasma and other topologically nontrivial media—is a consequence of the coupling of electrodynamics to the topological gluon field fluctuations that form metastable $CP$-odd domains. In phenomenological models it is usually assumed that the domains are uniform and the influence of the domain walls on the electric current flow is not essential. This article challenges the latter assumption. A simple model consisting of a uniform spherical domain in a uniform time-dependent magnetic field is introduced and analytically solved. It is shown that (i) no electric current flows into or out of the domain; (ii) the charge separation current, viz. the total electric current flowing inside the domain in the external field direction, is a dissipative Ohm current; (iii) the CME effect can be produced either by the anomalous current or by the boundary conditions on the domain wall; and (iv) the charge separation current oscillates in plasma long after the external field decays. These properties are qualitatively different from the CME in an infinite medium.},
doi = {10.1103/PhysRevC.97.064914},
journal = {Physical Review C},
number = 6,
volume = 97,
place = {United States},
year = {2018},
month = {6}
}
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https://doi.org/10.1103/PhysRevC.97.064914
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Works referencing / citing this record:
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