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- Title
Comment on 'Non-vacuum conformally flat space-times: dark energy'.
- Authors
Culetu, Hristu
- Abstract
Ibohal, Ishwarchandra and Singh (Ibohal et al., Astrophys. Space Sci. 335, 581, ) proposed a class of exact, non-vacuum and conformally flat solutions of Einstein's equations whose stress tensor T has negative pressure. We show that T corresponds to an anisotropic fluid and the equation of state parameter seems not to be ω=−1/2. We consider the authors' constant cannot be the mass of a test particle but is related to a Rindler acceleration of a spherical distribution of uniformly accelerating observers.
- Subjects
SPACETIME; DARK energy; NUMERICAL solutions to Einstein field equations; PARAMETER estimation; EQUATIONS of state; COSMOLOGICAL constant
- Publication
Astrophysics & Space Science, 2013, Vol 344, Issue 2, p287
- ISSN
0004-640X
- Publication type
Letter
- DOI
10.1007/s10509-012-1341-x