The Generalized Second Law in Dark Energy Dominated Universes
arXiv:gr-qc/0612092
Abstract
The generalized second law of gravitational thermodynamics is examined in scenarios where the dark energy dominates the cosmic expansion. For quintessence and phantom fields this law is fulfilled but it may fail when the dark energy is in the form of a Chaplygin gas. However, if a black hole is allowed in the picture, the law can be violated if the field is of phantom type.
3 pages, submitted to the Proceedings of the Eleventh Marcel Grossmann Meeting; uses World Scientific style; Keywords: Theoretical cosmology, black holes, thermodynamics