Thermal self-energies at zero momentum
- Department of Physics, University of Puerto Rico, P.O. Box 23343, Rio Piedras, Puerto Rico 00931 (United States)
- Indian Institute of Astrophysics, Bangalore 560034 (India)
In general the zero momentum limit of thermal self-energies calculated in perturbation theory depends on the order in which the time and the space components of the momentum are taken to zero. We show that this is an artifact of the perturbative calculation, and in fact the nonanalyticity of the one-loop self-energy disappears when it is calculated with improved vertices and/or improved propagators that incorporate the imaginary part of the self-energy.
- OSTI ID:
- 44792
- Journal Information:
- Physical Review, D, Vol. 51, Issue 9; Other Information: PBD: 1 May 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Zero momentum limits of two loop finite temperature self-energies in [phi][sup 4] and [phi][sup 3] coupling theories
Imaginary part of the next-to-leading-order static gluon self-energy in an anisotropic plasma
Systematics of high temperature perturbation theory: The two-loop electron self-energy in QED
Journal Article
·
Fri Apr 15 00:00:00 EDT 1994
· Physical Review, D (Particles Fields); (United States)
·
OSTI ID:44792
Imaginary part of the next-to-leading-order static gluon self-energy in an anisotropic plasma
Journal Article
·
Tue Sep 15 00:00:00 EDT 2009
· Physical Review. D, Particles Fields
·
OSTI ID:44792
Systematics of high temperature perturbation theory: The two-loop electron self-energy in QED
Journal Article
·
Fri Jan 15 00:00:00 EST 2010
· Physical Review. D, Particles Fields
·
OSTI ID:44792