Emergent cosmic space in Rastall theory
Abstract
Padmanabhan’s emergent cosmic space proposal is exploited to study the Rastall theory which involves modifying the covariant conservation law of energy-momentum tensor. As necessary elements for this approach, we firstly find the Komar energy and the general entropy of apparent horizon in this theory. After that, a modified expansion law is invoked to re-obtain the Friedmann equations.
- Publication:
-
Classical and Quantum Gravity
- Pub Date:
- April 2017
- DOI:
- 10.1088/1361-6382/aa61df
- arXiv:
- arXiv:1607.04383
- Bibcode:
- 2017CQGra..34g7001Y
- Keywords:
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- General Relativity and Quantum Cosmology
- E-Print:
- 8 pages, no figures, published version in CQG