• Open Access

Plasmon mass scale in two-dimensional classical nonequilibrium gauge theory

T. Lappi and J. Peuron
Phys. Rev. D 97, 034017 – Published 15 February 2018

Abstract

We study the plasmon mass scale in classical gluodynamics in a two-dimensional configuration that mimics the boost-invariant initial color fields in a heavy-ion collision. We numerically measure the plasmon mass scale using three different methods: a hard thermal loop (HTL) expression involving the quasiparticle spectrum constructed from Coulomb gauge field correlators, an effective dispersion relation, and the measurement of oscillations between electric and magnetic energies after introducing a spatially uniform perturbation to the electric field. We find that the HTL expression and the uniform electric field measurement are in rough agreement. The effective dispersion relation agrees with other methods within a factor of 2. We also study the dependence on time and occupation number, observing similar trends as in three spatial dimensions, where a power-law dependence sets in after an occupation-number-dependent transient time. We observe a decrease of the plasmon mass squared as t1/3 at late times.

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  • Received 12 December 2017

DOI:https://doi.org/10.1103/PhysRevD.97.034017

Published by the American Physical Society under the terms of the 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.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

T. Lappi*

  • Department of Physics, P.O. Box 35, 40014 University of Jyväskylä, Finland and Helsinki Institute of Physics, P.O. Box 64, 00014 University of Helsinki, Finland

J. Peuron

  • Department of Physics, P.O. Box 35, 40014 University of Jyväskylä, Finland

  • *tuomas.v.v.lappi@jyu.fi
  • jarkko.t.peuron@student.jyu.fi

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Issue

Vol. 97, Iss. 3 — 1 February 2018

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