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Gauge-Invariant Renormalization Group at Finite Temperature and Debye Screening

Massimo Pietroni
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Abstract

I describe an application of Wilson Renormalization group to the real time formalism of finite temperature field theory. The approach has two nice features: 1) the RG flow equations describe non-perturbatively the effect of thermal fluctuations only, and, 2) the flow is gauge invariant. I then describe the application of the method to the study of the gluon self-energy in SU(N), and present results for the computation of the Debye and magnetic screening masses.

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Massimo Pietroni. 1997-06-30. Gauge-Invariant Renormalization Group at Finite Temperature and Debye Screening. https://arxiv.org/abs/hep-ph/9706544

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