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- W2076377745 abstract "The authors discuss a self-consistent evaluation of the effective potential for a lambda Phi 4 theory, non-minimally coupled to an Einstein background geometry. This method takes into account the contribution from multi-loop Feynmann diagrams with non-overlapping bubbles. It results that, even if the classical potential is double-well shaped, the vacuum expectation value of the scalar field is always vanishing because of a finite size effect, and no phase transitions can occur. A similar result can be obtained also in the de Sitter S4 space, where the present approach holds as well. The implications of these results on the dynamics of the early Universe are briefly discussed." @default.
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- W2076377745 date "1989-12-01" @default.
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- W2076377745 title "Improved effective potential in the Einstein metric" @default.
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- W2076377745 doi "https://doi.org/10.1088/0264-9381/6/12/019" @default.
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