Adiabatic decaying vacuum model for the universe

Abstract

We study a model that the entropy per particle in the universe is constant. The sources for the entropy are the particle creation and a lambda decaying term. We find exact solutions for the Einstein field equations and show the compatibilty of the model with respect to the age and the acceleration of the universe.

arXiv comment10 pages, 2 figures

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Cited by in corpus (4)

• Interpreting Cosmological Vacuum Decay
• Accelerating Cold Dark Matter Cosmology (${\Omega }_{\Lambda }\equiv 0$)
• Constraints on Cold Dark Matter Accelerating Cosmologies and Cluster Formation
• Adiabatic Particle Production with Decaying $\Lambda$ and Anisotropic Universe