Astrophysics
[Submitted on 25 Nov 1996]
Title:Nonlinear bulk viscosity and inflation
View PDFAbstract: We develop a nonlinear generalisation of the causal linear thermodynamics of bulk viscosity, incorporating positivity of the entropy production rate and the effective specific entropy. The theory is applied to viscous fluid inflation (which is necessarily far from equilibrium), and we find thermodynamically consistent inflationary solutions, both exponential and power-law.
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