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Title: Magnetic Component of Yang-Mills Plasma

Abstract

Confinement in non-Abelian gauge theories is commonly ascribed to percolation of magnetic monopoles, or strings in the vacuum. At the deconfinement phase transition the condensed magnetic degrees of freedom are released into gluon plasma as thermal magnetic monopoles. We point out that within the percolation picture, lattice simulations can be used to estimate the monopole content of the gluon plasma. We show that right above the critical temperature the monopole density remains a constant function of temperature, as in a liquid, and then grows, as in a gas.

Authors:
 [1];  [2];  [3];  [4]
  1. Institute of Theoretical and Experimental Physics, B.Cheremushkinskaya 25, Moscow, 117218 (Russian Federation)
  2. (Japan)
  3. INFN, Dipartimento di Fisica, Universita di Pisa, Largo Pontecorvo 3, 56127 Pisa (Italy)
  4. (Russian Federation)
Publication Date:
OSTI Identifier:
20957676
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevLett.98.082002; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COMPUTERIZED SIMULATION; CRITICAL TEMPERATURE; DEGREES OF FREEDOM; GAUGE INVARIANCE; GLUONS; LATTICE FIELD THEORY; MAGNETIC MONOPOLES; PHASE TRANSFORMATIONS; PLASMA; TEMPERATURE DEPENDENCE; YANG-MILLS THEORY

Citation Formats

Chernodub, M. N., Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192, Zakharov, V. I., and Institute of Theoretical and Experimental Physics, B.Cheremushkinskaya 25, Moscow, 117218. Magnetic Component of Yang-Mills Plasma. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.082002.
Chernodub, M. N., Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192, Zakharov, V. I., & Institute of Theoretical and Experimental Physics, B.Cheremushkinskaya 25, Moscow, 117218. Magnetic Component of Yang-Mills Plasma. United States. doi:10.1103/PHYSREVLETT.98.082002.
Chernodub, M. N., Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192, Zakharov, V. I., and Institute of Theoretical and Experimental Physics, B.Cheremushkinskaya 25, Moscow, 117218. Fri . "Magnetic Component of Yang-Mills Plasma". United States. doi:10.1103/PHYSREVLETT.98.082002.
@article{osti_20957676,
title = {Magnetic Component of Yang-Mills Plasma},
author = {Chernodub, M. N. and Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192 and Zakharov, V. I. and Institute of Theoretical and Experimental Physics, B.Cheremushkinskaya 25, Moscow, 117218},
abstractNote = {Confinement in non-Abelian gauge theories is commonly ascribed to percolation of magnetic monopoles, or strings in the vacuum. At the deconfinement phase transition the condensed magnetic degrees of freedom are released into gluon plasma as thermal magnetic monopoles. We point out that within the percolation picture, lattice simulations can be used to estimate the monopole content of the gluon plasma. We show that right above the critical temperature the monopole density remains a constant function of temperature, as in a liquid, and then grows, as in a gas.},
doi = {10.1103/PHYSREVLETT.98.082002},
journal = {Physical Review Letters},
number = 8,
volume = 98,
place = {United States},
year = {Fri Feb 23 00:00:00 EST 2007},
month = {Fri Feb 23 00:00:00 EST 2007}
}
  • The vacuum of Yang-Mills theory contains singular stringlike objects identified with center (magnetic) vortices. Percolation of magnetic vortices is known to be responsible for the color confinement in the low-temperature phase of the theory. In our work, we study properties of the vortices at finite temperature using lattice simulations of SU(2) gauge theory. We show that magnetic vortices provide a numerically large contribution to thermodynamic quantities of the gluon plasma in Yang-Mills theory. In particular, we observe that in the deconfinement phase at temperatures T{sub c}<T < or approx. 3T{sub c} the magnetic component of the gluon plasma produces amore » negative (ghostlike) contribution to the anomaly of the energy-momentum tensor. In the confinement phase, the vortex contribution is positive. The thermodynamical significance of the magnetic objects allows us to suggest that the quark-gluon plasma may contain a developed network of magnetic flux tubes. The existence of the vortex network may lead to observable effects in the quark-gluon plasma because the chromomagnetic field of the vortices should scatter and drag quarks.« less
  • A class of time-dependent, spherically symmetric solutions of Yang-Mills equations is found. The solutions describe a transformation of the initial color-electric and magnetic fields into the Wu-Yang magnetic monopole.
  • A classical nonperturbative study of the longitudinal modes in a Yang-Mills (SU(2)) plasma is carried out. A new periodic non-Abelian mode is found which alternates with the usual Abelian plasma mode. When the non-Abelian terms in the equations become large, chaotic behavior sets in.
  • We evaluate the energy-momentum tensor of a massive quark as it moves through an N=4 SYM quark-gluon plasma at constant velocity. We find that in the near-quark region, where the dynamics is expected to be dominated by dissipative behavior, the energy density may be quantitatively characterized by a transient at velocities above the speed of sound of the plasma.