1998/03/11 by Benoit Vanderheyden, Gordon Baym · 1 citation
Physics and Astronomy · #hep-ph #cond-mat
paper · pdf · doi:10.1023/b:joss.0000033166.37520.ae
22 pages, 3 figures, submitted to J. Stat. Phys. 98-74, a special issue dedicated to Leo Kadanoff on his sixtieth birthday
arxiv created 1998/03/11 · arxiv updated 2016/09/06
We generalize the concept of conserving, Phi-derivable, approximations to relativistic field theories. Treating the interaction field as a dynamical degree of freedom, we derive the thermodynamic potential in terms of fully dressed propagators, an approach which allows us to resolve the entropy of a relativistic plasma into contributions from its interacting elementary excitations. We illustrate the derivation for a hot relativistic system governed by electromagnetic interactions.