ar X iv : 0 90 4 . 05 74 v 1 [ gr - q c ] 3 A pr 2 00 9 1 Review on Extended Approaches in the Kaluza -

ar X iv : 0 90 4 . 45 54 v 1 [ gr - q c ] 2 9 A pr 2 00 9 Island Cosmology

If the observed dark energy is a cosmological constant, the canonical state of the universe is de Sitter spacetime. In such a spacetime, quantum fluctuations that violate the null energy condition will create islands of matter. If the fluctuation is sufficiently large, the island may resemble our observable universe. Phenomenological approaches to calculating density fluctuations yield a scale ...

ar X iv : 0 70 4 . 33 68 v 2 [ gr - q c ] 2 6 A pr 2 00 7 Search for gravitational waves from binary inspirals in S 3 and S 4 LIGO data

ar X iv : 0 90 3 . 02 70 v 2 [ gr - q c ] 1 4 A pr 2 00 9 Cosmological scaling solutions in generalised Gauss - Bonnet gravity theories

The conditions for the existence and stability of cosmological power-law scaling solutions are established when the Einstein-Hilbert action is modified by the inclusion of a function of the Gauss-Bonnet curvature invariant. The general form of the action that leads to such solutions is determined for the case where the universe is sourced by a barotropic perfect fluid. It is shown by employing ...

ar X iv : 0 90 7 . 30 27 v 1 [ gr - q c ] 1 7 Ju l 2 00 9 Scale transformation , modified gravity , and Brans - Dicke theory

A model of Einstein-Hilbert action subject to scale transformation is studied and then its correspondence with modified gravity and Brans-Dicke theory is examined. PACS: 04.50.Kd

ar X iv : 0 90 6 . 10 47 v 1 [ gr - q c ] 5 J un 2 00 9 de Sitter equilibrium as a fundamental framework for cosmology

Cosmology might turn out to be the study of fluctuations around a “de Sitter equilibrium” state. In this article I review the basic ideas and the attractive features of this framework, and respond to a number common questions raised about the de Sitter equilibrium picture. I show that this framework does not suffer from the “Boltzmann Brain” problem, and relate this cosmological picture to rece...