By NelmaS on Dom, 03/07/2016 - 20:24
Universidad Autónoma de Barcelona
Homogeneous and isotropic, nonsingular, bouncing world models are designed to evade the initial singularity at the beginning of the cosmic expansion. We study the thermodynamics of the subset of these models governed by general relativity. Considering the entropy of matter and radiation and taking into account that the entropy of the apparent horizon varies as its area, we argue that these models do not respect the generalized second law of thermodynamics, also away from the bounce.
4 de julho de 2016 | 10:30
Faculdade de Ciências da Universidade de Lisboa (C8.2.04)
Campo Grande, 1749-016 Lisboa