Study of the gluon propagator in the large-N {sub f} limit at finite temperature and chemical potential for weak and strong couplings

Journal Article · Fri Sep 15 00:00:00 EDT 2006 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2005.11.012· OSTI ID:20845981

Blaizot, Jean-Paul ^[1]; Ipp, Andreas ^[1]; Rebhan, Anton ^[2]

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1. ECT, Villa Tambosi, Strada delle Tabarelle 286, I-38050 Villazzano Trento (Italy)
2. Institut fuer Theoretische Physik, Technische Universitaet Wien, Wiedner Hauptstrasse 8-10/136, A-1040 Vienna (Austria)

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 {sub 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.

• OSTI ID: 20845981
• Journal Information: Annals of Physics (New York), Journal Name: Annals of Physics (New York) Journal Issue: 9 Vol. 321; ISSN 0003-4916; ISSN APNYA6
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
GLUONS
LANDAU DAMPING
OSCILLATIONS
POTENTIALS
PROPAGATOR
QUASI PARTICLES