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Universality of the hard-loop action

Alina Czajka*

Stanisław Mrówczyński†

  • Institute of Physics, Jan Kochanowski University, 25-406 Kielce, Poland

  • Institute of Physics, Jan Kochanowski University, 25-406 Kielce, Poland and National Centre for Nuclear Research, 00-681 Warsaw, Poland

  • *czajka@ujk.edu.pl
  • †mrow@fuw.edu.pl
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Phys. Rev. D 91, 025013 – Published 14 January, 2015

DOI: https://doi.org/10.1103/PhysRevD.91.025013

Abstract

The effective actions of gauge bosons, fermions, and scalars, which are obtained within the hard-loop approximation, are shown to have unique forms for a whole class of gauge theories including QED, scalar QED, super QED, pure Yang-Mills, QCD, and super Yang-Mills. The universality occurs irrespective of a field content of each theory and of a variety of specific interactions. Consequently, the long-wavelength or semiclassical features of plasma systems governed by these theories such as collective excitations are almost identical. An origin of the universality, which holds within the limits of applicability of the hard-loop approach, is discussed.

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Phys. Rev. D 91, 025013– Published 14 January, 2015
  • Received 29 October 2014

© 2015 American Physical Society

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