H. Narnhofer
Entropy Density for Relativistic Quantum Field Theory
(49K, LaTeX)

ABSTRACT.  We show how the nuclearity condition of Buchholz and Wichmann allows to
define in the ground state a local entropy with the desired properties
 despite the fact that local algebras are type III. Generalization to
temperature states is also possible so that thermodynamic functions
also exist in the context of relativistic quantum field theory.