Plasmon in hot {phi}{sup 4} theory
- Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
We study the two-loop resummed propagator in hot {ital g}{sup 2}{phi}{sup 4} theory. The propagator has a cut aong the whole real axis in the complex energy plane, but for small {ital g} the spectral density is sharply peaked around the plasmon. The dispersion relation and the width of the plasmon are calculated at zero {ital and} finite momentum. At large momenta the spectral width vanishes, and the plasmon loses its collectivity and behaves like a noninteracting free particle. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 277479
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 2 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Viscosity in hot scalar field theory
In-medium effects on the {phi} meson
Approximate spectral functions in thermal field theory
Journal Article
·
Wed May 01 00:00:00 EDT 1996
· Physical Review, D
·
OSTI ID:284034
In-medium effects on the {phi} meson
Journal Article
·
Fri Feb 28 23:00:00 EST 1997
· Physical Review, C
·
OSTI ID:513493
Approximate spectral functions in thermal field theory
Journal Article
·
Tue Oct 01 00:00:00 EDT 1996
· Physical Review, D
·
OSTI ID:387567