Thermodynamics of the ϕ^4 theory in tadpole approximation

Peshier, A.; Kämpfer, B.; Pavlenko, O. P.; Soff, G.

Thermodynamics of the ϕ^4 theory in tadpole approximation

Authors

Description

Relying on the Luttinger-Ward theorem we derive a thermodynamically selfconsistent and scale independent approximation of the thermodynamic potential for the scalar $ϕ^4$ theory in the tadpole approximation. The resulting thermodynamic potential as a function of the temperature is similar to the one of the recently proposed screened perturbation theory.
6 pages, including 1 eps figure