Renormalization in momentum dependent resummations
Journal Article
·
· Physical Review. D, Particles Fields
- Institute of Physics, Budapest University of Technology and Economics, Budafoki ut 8, H-1111 Budapest (Hungary)
At finite temperature and in nonequilibrium environments we have to resum perturbation theory to avoid infrared divergences. Since resummation shuffles the perturbative orders, renormalizability is a nontrivial issue. In this paper we demonstrate that one can modify any type of resummations--even if it is momentum dependent, or it resums higher point functions - in a way that it is renormalizable with the usual zero temperature counterterms. To achieve this goal we reformulate resummation in form of a renormalization scheme. We apply this technique to perform a 2PI resummation in the six dimensional cubic scalar model in equilibrium.
- OSTI ID:
- 20871454
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 8 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Renormalization and resummation in finite temperature field theories
Dynamical renormalization group resummation of finite temperature infrared divergences
Nonperturbative renormalization for 2PI effective action techniques
Journal Article
·
Sun May 15 00:00:00 EDT 2005
· Physical Review. D, Particles Fields
·
OSTI ID:20709303
Dynamical renormalization group resummation of finite temperature infrared divergences
Journal Article
·
Wed Sep 01 00:00:00 EDT 1999
· Physical Review, D
·
OSTI ID:6296068
Nonperturbative renormalization for 2PI effective action techniques
Journal Article
·
Wed Dec 14 23:00:00 EST 2005
· Annals of Physics (New York)
·
OSTI ID:20766971