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Finite Temperature Effective Potential for Spontaneously Broken $λΦ^4$ Theory

Herbert Nachbagauer
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Abstract

We present a self-consistent calculation of the finite temperature effective potential for $λΦ^4$ theory in four dimensions using a composite operator effective action. We find that in a spontaneously broken theory not only the so-called daisy and superdaisy graphs contribute to the next-to-leading order thermal mass, but also resummed non-local diagrams are of the same order, thus altering the effective potential at small effective mass.

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Herbert Nachbagauer. 1994-09-03. Finite Temperature Effective Potential for Spontaneously Broken $λΦ^4$ Theory. https://arxiv.org/abs/hep-ph/9409213

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