Renormalization of self-consistent approximation schemes at finite temperature. II. Applications to the sunset diagram
نویسندگان
چکیده
منابع مشابه
Renormalization of Self-consistent Approximation schemes II: Applications to the sunset diagram
The theoretical concepts for the renormalization of self-consistent Dyson resummations, deviced in the first paper of this series, are applied to first example cases for the φ-theory. Besides the tadpole (Hartree) approximation as a novel part the numerical solutions are presented which includes the sunset self-energy diagram into the self-consistent scheme based on the Φ-derivable approximatio...
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Within finite temperature field theory, we show that truncated non-perturbative selfconsistent Dyson resummation schemes can be renormalized with local counter terms defined at the vacuum level. The requirements are that the underlying theory is renormalizable and that the self-consistent scheme follows Baym’s Φ-derivable concept. The scheme generates both, the renormalized self-consistent equa...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.65.105005