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MULTILOOP CONTRIBUTION TO THE FINITE TEMPERATURE EFFECTIVE POTENTIAL

Authors
  • Spallucci, E.
Publication Date
Jan 01, 1989
Identifiers
DOI: 10.1007/BF02771040
OAI: oai:inspirehep.net:282431
Source
INSPIRE-HEP
Keywords
License
Unknown
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Abstract

We study the finite-temperature effective potential for a λΦ4 theory with a tachyonic mass. More precisely we compute the contribution from multiloop graphs with nonoverlapping bubbles. This is done by substituting the one-loop effective mass with an auxiliary field χ which has to be self-consistently determined. The two phases of the system are characterized by different values of the order parameters ϕ and χ. The temperature behaviour of the effective mass and coupling constant are discussed in some detail.

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