Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-04-20
Ann.Phys.317:281-353,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
82 pages, 20 figures; v2 - typos corrected, references added
Scientific paper
10.1016/j.aop.2004.09.017
There has been significant progress in our understanding of finite-temperature field theory over the past decade. In this paper, we review the progress in perturbative thermal field theory focusing on thermodynamic quantities. We first discuss the breakdown of naive perturbation theory at finite temperature and the need for an effective expansion that resums an infinite class of diagrams in the perturbative expansion. This effective expansion which is due to Braaten and Pisarski, can be used to systematically calculate various static and dynamical quantities as a weak-coupling expansion in powers of g. However, it turns that the weak-coupling expansion for thermodynamic quantities are useless unless the coupling constant is very small. We critically discuss various ways of reorganizing the perturbative series for thermal field theories in order to improve its convergence. These include screened perturbation theory (SPT), hard-thermal-loop perturbation theory (HTLPT), the Phi-derivable approach, dimensionally reduced (DR) SPT, and the DR Phi-derivable approach.
Andersen Jens O.
Strickland Michael
No associations
LandOfFree
Resummation in Hot Field Theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Resummation in Hot Field Theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resummation in Hot Field Theories will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-55604