Analytic continuation of thermalN-point functions from imaginary to real energies
نویسندگان
چکیده
منابع مشابه
Analytic continuation of thermal N-point functions from imaginary to real energies.
We consider thermal n-point Green functions in the framework of quantum field theory at finite temperature. We show how analytic continuations from imaginary to real energies relate these functions originally defined in the imaginary-time formalism to retarded and advanced real-time ones. The described method is valid to all orders of perturbation theory. It has the further advantage that it is...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1994
ISSN: 0556-2821
DOI: 10.1103/physrevd.49.4107