Fermionic Collective Modes of an Anisotropic Quark-Gluon Plasma
Abstract
We determine the fermionic collective modes of a quark-gluon plasma which is anisotropic in momentum space. We calculate the fermion self-energy in both the imaginary- and real-time formalisms and find that numerically and analytically (for two special cases) there are no unstable fermionic modes. In addition we demonstrate that in the hard-loop limit the Kubo-Martin-Schwinger condition, which relates the off-diagonal components of the real-time fermion self-energy, holds even for the anisotropic, and therefore non-equilibrium, quark-gluon plasma considered here. The results obtained here set the stage for the calculation of the non-equilibrium photon production rate from an anisotropic quark-gluon plasma.
Cite
@article{arxiv.hep-ph/0606160,
title = {Fermionic Collective Modes of an Anisotropic Quark-Gluon Plasma},
author = {Bjoern Schenke and Michael Strickland},
journal= {arXiv preprint arXiv:hep-ph/0606160},
year = {2008}
}
Comments
16 pages, 8 figures; v2 typos fixed and one reference added