Content area
Abstract
Recently, Hořava proposed a power counting renormalizable theory for (3+1)-dimensional quantum gravity, which reduces to Einstein gravity with a non-vanishing cosmological constant in IR, but possesses improved UV behaviors. In this work, we analyze the stability of the Einstein static universe by considering linear homogeneous perturbations in the context of an IR modification of Hořava gravity, which implies a ‘soft’ breaking of the ‘detailed balance’ condition. The stability regions of the Einstein static universe is parameterized by the linear equation of state parameter w=p/ρ and the parameters appearing in the Hořava theory, and it is shown that a large class of stable solutions exists in the respective parameter space.
Details
Title
Stability of the Einstein static universe in IR modified Hořava gravity
Author
Böhmer, Christian G 1 ; Lobo, Francisco S N 2
1 Department of Mathematics and Institute of Origins, University College London, London, UK
2 Centro de Física Teórica e Computacional, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
1 Department of Mathematics and Institute of Origins, University College London, London, UK
2 Centro de Física Teórica e Computacional, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
Pages
1111-1118
Publication year
2010
Publication date
Dec 2010
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2294020276
Copyright
The European Physical Journal C is a copyright of Springer, (2010). All Rights Reserved.