Fermionic Collective Modes of an Anisotropic Quark-Gluon Plasma

Details Fermionic Collective Modes of an Anisotropic Quark-Gluon Plasma Fermionic Collective Modes of an Anisotropic Quark-Gluon Plasma

2006-06-14

arxiv.org/abs/hep-ph/0606160v2

Phys. Rev. D 74, 065004 (2006)

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 8 figures; v2 typos fixed and one reference added

Scientific paper

10.1103/PhysRevD.74.065004

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.

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