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Title: Topologically induced local PandCP violation in QCD x QED

Abstract

The existence of topological solutions and axial anomaly open a possibility of PandCP violation in QCD. For a reason that has not yet been established conclusively, this possibility is not realized in strong interactions - the experimental data indicate that a global PandCP violation in QCD is absent. Nevertheless, the fluctuations of topological charge in QCD vacuum, although not observable directly, are expected to play an important role in the breaking of U{sub A}(1) symmetry and in the mass spectrum and other properties of hadrons. Moreover, in the presence of very intense external electromagnetic fields topological solutions of QCD can induce localP-andCP-odd effects in the SU{sub c}(3)xU{sub em}(1) gauge theory that can be observed in experiment directly. Here I show how these local parity-violating phenomena can be described by using the Maxwell-Chern-Simons, or axion, electrodynamics as an effective theory. Local P-andCP-violation in hot QCD matter can be observed in experiment through the 'chiral magnetic effect' - the separation of electric charge along the axis of magnetic field. Very recently, STAR Collaboration presented an observation of the electric charge asymmetry with respect to reaction plane in relativistic heavy ion collisions at RHIC.

Authors:
 [1]
  1. Physics Department, Brookhaven National Laboratory, Upton, NY 11973-5000 (United States)
Publication Date:
OSTI Identifier:
21336085
Resource Type:
Journal Article
Journal Name:
Annals of Physics (New York)
Additional Journal Information:
Journal Volume: 325; Journal Issue: 1; Other Information: DOI: 10.1016/j.aop.2009.11.002; PII: S0003-4916(09)00220-6; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-4916
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; CHIRALITY; ELECTRIC CHARGES; ELECTROMAGNETIC FIELDS; GAUGE INVARIANCE; HEAVY ION REACTIONS; MAGNETIC FIELDS; MASS SPECTRA; MATHEMATICAL SOLUTIONS; PARITY; QUANTUM CHROMODYNAMICS; QUANTUM ELECTRODYNAMICS; RELATIVISTIC RANGE; STRONG INTERACTIONS; SU-3 GROUPS; SYMMETRY; TOPOLOGY

Citation Formats

Kharzeev, Dmitri E, and Department of Physics, Yale University, New Haven, CT 06520-8120. Topologically induced local PandCP violation in QCD x QED. United States: N. p., 2010. Web. doi:10.1016/j.aop.2009.11.002.
Kharzeev, Dmitri E, & Department of Physics, Yale University, New Haven, CT 06520-8120. Topologically induced local PandCP violation in QCD x QED. United States. https://doi.org/10.1016/j.aop.2009.11.002
Kharzeev, Dmitri E, and Department of Physics, Yale University, New Haven, CT 06520-8120. Fri . "Topologically induced local PandCP violation in QCD x QED". United States. https://doi.org/10.1016/j.aop.2009.11.002.
@article{osti_21336085,
title = {Topologically induced local PandCP violation in QCD x QED},
author = {Kharzeev, Dmitri E and Department of Physics, Yale University, New Haven, CT 06520-8120},
abstractNote = {The existence of topological solutions and axial anomaly open a possibility of PandCP violation in QCD. For a reason that has not yet been established conclusively, this possibility is not realized in strong interactions - the experimental data indicate that a global PandCP violation in QCD is absent. Nevertheless, the fluctuations of topological charge in QCD vacuum, although not observable directly, are expected to play an important role in the breaking of U{sub A}(1) symmetry and in the mass spectrum and other properties of hadrons. Moreover, in the presence of very intense external electromagnetic fields topological solutions of QCD can induce localP-andCP-odd effects in the SU{sub c}(3)xU{sub em}(1) gauge theory that can be observed in experiment directly. Here I show how these local parity-violating phenomena can be described by using the Maxwell-Chern-Simons, or axion, electrodynamics as an effective theory. Local P-andCP-violation in hot QCD matter can be observed in experiment through the 'chiral magnetic effect' - the separation of electric charge along the axis of magnetic field. Very recently, STAR Collaboration presented an observation of the electric charge asymmetry with respect to reaction plane in relativistic heavy ion collisions at RHIC.},
doi = {10.1016/j.aop.2009.11.002},
url = {https://www.osti.gov/biblio/21336085}, journal = {Annals of Physics (New York)},
issn = {0003-4916},
number = 1,
volume = 325,
place = {United States},
year = {2010},
month = {1}
}