Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-03-11
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 3 figures, submitted to J. Stat. Phys. 98-74, a special issue dedicated to Leo Kadanoff on his sixtieth birthday
Scientific paper
10.1023/B:JOSS.0000033166.37520.
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.
Baym Gordon
Vanderheyden Benoit
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