Simple out-of-equilibrium field theory formalism?
نویسندگان
چکیده
منابع مشابه
ar X iv : h ep - p h / 01 04 07 5 v 1 6 A pr 2 00 1 A simple out - of - equilibrium field theory formalism ?
In this paper, we determine a condition of applicability of a very simple formalism for the calculation of a fast process taking place in a non-equilibrium medium, in which the particle distribution functions are frozen in time. Indeed, a well known obstacle for the use of such a naive formalism is the appearance of the so-called " pinch singularities ". We argue that these potentially dangerou...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2001
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.64.056006