Relativistic theories of interacting fields and fluids

We investigate divergence-type theories describing the dissipative interaction between a field and a fluid. We look for theories which, under equilibrium conditions, reduce to the theory of a Klein-Gordon scalar field and a perfect fluid. We show that the requirements of causality and positivity of...

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Autores principales: Calzetta, E., Thibeault, M.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15507998_v63_n10_p13_Calzetta
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Sumario:We investigate divergence-type theories describing the dissipative interaction between a field and a fluid. We look for theories which, under equilibrium conditions, reduce to the theory of a Klein-Gordon scalar field and a perfect fluid. We show that the requirements of causality and positivity of entropy production put nontrivial constraints to the structure of the interaction terms. These theories provide a basis for the phenomonological study of the reheating period. © 2001 The American Physical Society.