Combining infrared and low-temperature asymptotes in Yang-Mills theories

Abstract

We demonstrate that power-like non-perturbative behavior of gluon and ghost propagators in infrared limit of Yang-Mills theories can provide at finite temperatures T a negative T^4-contribution to the pressure and energy density. Existence of mass gap implies then new relations between infrared critical exponents of gluon and ghost propagators.

Comments: 4 pages, RevTeX 4. Revision: title changed, references and new material added. Published version