Topical review: Finite-temperature field theory

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Abstract

In relativistic theories particle number is not conserved (although both lepton and baryon number are). Therefore when discussing the thermodynamics of a quantum field theory one uses the grand canonical formalism: the entropy S is maximised, keeping fixed the ensemble averages E and N of energy and lepton or baryon number. To implement these constraints two Lagrange multipliers are introduced, beta =1/kT and mu the chemical potential.

Original languageEnglish (US)
Pages (from-to)267-285
Number of pages19
JournalJournal of Physics G: Nuclear and Particle Physics
Volume15
Issue number3
DOIs
StatePublished - Mar 1989

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