Perturbation theory and non-perturbative renormalization flow in scalar field theory at finite temperature
نویسندگان
چکیده
منابع مشابه
Perturbation theory and non-perturbative renormalization flow in scalar field theory at finite temperature
We use the non-perturbative renormalization group to clarify some features of perturbation theory in thermal field theory. For the specific case of the scalar field theory with O(N) symmetry, we solve the flow equations within the local potential approximation. This approximation reproduces the perturbative results for the screening mass and the pressure up to order g3, and starts to differ at ...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2007
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2006.11.139