Renormalisation Group Improved Thermal Coupling Constant In An External Field

Details Renormalisation Group Improved Thermal Coupling Constant In An External Field Renormalisation Group Improved Thermal Coupling Constant In An External Field

1998-04-29

arxiv.org/abs/hep-th/9804195v1

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, Latex, 2 figures

Scientific paper

Starting from renormalised Effective Lagrangian, in the presence of an external Chromo-Electric field at finite temperature, the expression for thermal coupling constant ($\alpha = (g^2)/(4 \pi)$) as a function of temperature and external field is derived, using finite temperature two parameter renormalisation group equation of Matsumoto, Nakano and Umezawa. For some values of the parameters, the coupling constant is seen to be approaching a value $\sim unity$.

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