Gap equation in scalar field theory at finite temperature
Mukherjee, Krishnendu
Original · EN
We investigate the two-loop gap equation for the thermal mass of hot massless g²ϕ⁴ theory and find that the gap equation itself has a non-zero finite imaginary part. This indicates that it is not possible to find the real thermal mass as a solution of the gap equation beyond g² order in perturbation theory. We have solved the gap equation and obtain the real and the imaginary part of the thermal mass which are correct up to g⁴ order in perturbation theory.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.