Journal of High Energy Physics

, 2017:123 | Cite as

Bulk viscous corrections to screening and damping in QCD at high temperatures

  • Qianqian Du
  • Adrian Dumitru
  • Yun Guo
  • Michael Strickland
Open Access
Regular Article - Theoretical Physics

Abstract

Non-equilibrium corrections to the distribution functions of quarks and gluons in a hot and dense QCD medium modify the “hard thermal loops” (HTL). The HTLs determine the retarded, advanced, and symmetric (time-ordered) propagators for gluons with soft momenta as well as the Debye screening and Landau damping mass scales. We compute such corrections to a thermal as well as to a non-thermal fixed point. The screening and damping mass scales are sensitive to the bulk pressure and hence to (pseudo-) critical dynamical scaling of the bulk viscosity in the vicinity of a second-order critical point. This could be reflected in the properties of quarkonium bound states in the deconfined phase and in the dynamics of soft gluon fields.

Keywords

Perturbative QCD Quark-Gluon Plasma 

Notes

Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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Copyright information

© The Author(s) 2017

Authors and Affiliations

  • Qianqian Du
    • 1
  • Adrian Dumitru
    • 2
    • 3
  • Yun Guo
    • 1
  • Michael Strickland
    • 4
  1. 1.Department of PhysicsGuangxi Normal UniversityGuilinChina
  2. 2.Department of Natural SciencesBaruch College, CUNYNew YorkU.S.A.
  3. 3.The Graduate School and University Center, The City University of New YorkNew YorkU.S.A.
  4. 4.Department of PhysicsKent State UniversityKentU.S.A.

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