Relativistic theories of interacting fields and fluids

Abstract

We investigate divergence-type theories (DTT) 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 non-trivial constarints to the structure of the interaction terms. These theories provide a basis for the phenomonological study of the reheating period.

17 pages, no figures, minor corrections made

References in corpus (3)

• Parametric Amplification of Metric Fluctuations During Reheating in Two Field Models
• Hydrodynamic transport functions from quantum kinetic theory
• Shear viscosity in ${\varphi }^4$ theory from an extended ladder resummation

Cited by in corpus (9)

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• Relativistic Turbulence: A Long Way from Preheating to Equilibrium
• Divergence-type nonlinear conformal hydrodynamics
• Viscous cosmological models and accelerated Universes
• Linking the hydrodynamic and kinetic description of a dissipative relativistic conformal theory
• A hydrodynamic approach to boost invariant free streaming
• On Extended Thermodynamics: From Classical to the Relativistic Regime
• Non-conformal evolution of magnetic fields during reheating
• Dissipative type theories for Bjorken and Gubser flows