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Study of the gluon propagator in the large-N_f limit at finite temperature and chemical potential for weak and strong couplings

Jean-Paul Blaizot·Andreas Ipp·Anton Rebhan
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Abstract

At finite temperature and chemical potential, the leading-order (hard-thermal-loop) contributions to the gauge-boson propagator lead to momentum-dependent thermal masses for propagating quasiparticles as well as dynamical screening and Landau damping effects. We compare the hard-thermal-loop propagator with the complete large-N_f gluon propagator, for which the usually subleading contributions, such as a finite width of quasiparticles, can be studied at nonperturbatively large effective coupling. We also study quantitatively the effect of Friedel oscillations in low-temperature electrostatic screening.

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Jean-Paul Blaizot, Andreas Ipp, Anton Rebhan. 2005-08-31. Study of the gluon propagator in the large-N_f limit at finite temperature and chemical potential for weak and strong couplings. https://doi.org/10.1016/j.aop.2005.11.012

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