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arXiv · hep-ph/9709323

Effective Potential at Finite Temperature: RG improvement vs. High temperature expansion

Hisao Nakkagawa·Hiroshi Yokota
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Abstract

We have applied the recently proposed renormalization group improvement procedure of the finite temperature effective potential, and have investigated extensively the phase structure of the massive scalar $ϕ^4$ model, showing that the $ϕ^4$ model has a rich 3-phase structure at $T \neq 0$, two of them are not seen in the ordinary perturbative analysis. Temperature dependent phase transition in this model is shown to be strongly the first order.

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Hisao Nakkagawa, Hiroshi Yokota. 1997-09-12. Effective Potential at Finite Temperature: RG improvement vs. High temperature expansion. https://doi.org/10.1143/ptps.129.209

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