Parton self-energies for general momentum-space anisotropy

Abstract

We introduce an efficient general method for calculating the self-energies, collective modes, and dispersion relations of quarks and gluons in a momentum-anisotropic high-temperature quark-gluon plasma. The method introduced is applicable to the most general classes of deformed anisotropic momentum distributions and the resulting self-energies are expressed in terms of a series of hypergeometric basis functions which are valid in the entire complex phase-velocity plane. Comparing to direct numerical integration of the self-energies, the proposed method is orders of magnitude faster and provides results with similar or better accuracy. To extend previous studies and demonstrate the application of the proposed method, we present numerical results for the parton self-energies and dispersion relations of partonic collective excitations for the case of an ellipsoidal momentum-space anisotropy. Finally, we also present, for the first time, the gluon unstable mode growth rate for the case of an ellipsoidal momentum-space anisotropy.

27 pages, 9 figures, typo fixed

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Cited by in corpus (7)

• The momentum broadening of energetic partons in an anisotropic plasma
• Photon production and elliptic flow from momentum-anisotropic quark-gluon plasma
• Collective modes in anisotropic plasmas
• Covariant formulation of gluon self-energy in presence of ellipsoidal anisotropy
• Collective modes of gluons in an anisotropic thermo-magnetic medium
• Effect of momentum anisotropy on quark matter in the quark-meson model
• Thermoelectric response of a hot and weakly magnetized anisotropic QCD medium