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arXiv · hep-ph/9209282

Temperature Renormalization Group and Resummation

Per Elmfors
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Abstract

The temperature renormalization group equation (TRGE) is compared with a diagrammatic expansion for the $(ϕ^4)_4$-theory. It is found that the one-loop TRGE resums the leading powers of temperature for the effective mass. A two-loop contribution to TRGE is required to do the leading resummation for the coupling constant. It is also shown that the higher order TRGE resums subleading powers of temperature.

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Per Elmfors. 1992-09-25. Temperature Renormalization Group and Resummation. https://doi.org/10.1142/s0217751x93000783

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