Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1851024 | Physics Letters B | 2015 | 6 Pages |
Abstract
We argue that the choice of an appropriate, massive, renormalization scheme can greatly improve the apparent convergence of perturbation theory at finite temperature. This is illustrated by the calculation of the pressure of a scalar field theory with quartic interactions, at 2-loop order. The result, almost identical to that obtained with more sophisticated resummation techniques, shows a remarkable stability as the coupling constant grows, in sharp contrast with standard perturbation theory.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Jean-Paul Blaizot, Nicolás Wschebor,