Plasmon in hot Phi(4) theory

Wang, Enke and Heinz, Ulrich (1996) Plasmon in hot Phi(4) theory. PHYSICAL REVIEW D, 53 (2). pp. 899-910. ISSN 0556-2821

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Abstract

We study the two-loop resummed propagator in hot g(2) phi(4) theory. The propagator has a cut along the whole real axis in the complex energy plane, but for small g the spectral density is sharply peaked around the plasmon. The dispersion relation and the width of the plasmon are calculated at zero and finite momentum. At large momenta the spectral width vanishes, and the plasmon loses its collectivity and behaves like a noninteracting free particle.

Item Type: Article
Uncontrolled Keywords: QUARK-GLUON PLASMA; TEMPERATURE GAUGE-THEORIES; FINITE-TEMPERATURE; FIELD-THEORY; AMPLITUDES; QCD
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 14 Nov 2023 10:43
Last Modified: 14 Nov 2023 10:43
URI: https://pred.uni-regensburg.de/id/eprint/51996

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