You are in the accessibility menu

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/68899
Title: 
The temperature dependence of the QCD running coupling
Author(s): 
Steffens, F. M.
Institution: 
  • Universidade Presbiteriana Mackenzie
  • Universidade Estadual Paulista (UNESP)
ISSN: 
0103-9733
Abstract: 
We study the running of the QCD coupling with the momentum squared (Q 2) and the temperature scales in the high temperature limit (T > Tc), using a mass dependent renormalization scheme to build the Renormalization Group Equations. The approach used guaranty gauge invariance, through the use of the Hard Thermal Loop approximation, and independence of the vertex chosen to renormalize the coupling. In general, the dependence of the coupling with the temperature is not logarithmical, although in the region Q2 ∼ T2 the logarithm approximation is reasonable. Finally, as known from Debye screening, color charge is screened in the coupling. The number of flavors, however, is anti-screened.
Issue Date: 
1-Jun-2006
Citation: 
Brazilian Journal of Physics, v. 36, n. 2 B, p. 582-585, 2006.
Time Duration: 
582-585
Keywords: 
  • Finite temperature QCD
  • Running coupling
Source: 
http://dx.doi.org/10.1590/S0103-97332006000400020
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/68899
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

There are no files associated with this item.
 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.