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Spherically symmetric vacuum solutions arising from trace dynamics modifications to gravitation
- Publication Year :
- 2013
- Publisher :
- arXiv, 2013.
-
Abstract
- We derive the equations governing static, spherically symmetric vacuum solutions to the Einstein equations, as modified by the frame-dependent effective action arising from trace dynamics. We give analytic and numerical results for the solutions of these equations, first in polar coordinates, and then in isotropic coordinates. General features of the static case are that (i) there is no horizon, since $g_{00}$ is non-vanishing for finite values of the polar radius, and only vanishes (in isotropic coordinates) at the internal singularity, (ii) the Ricci scalar $R$ vanishes identically, and (iii) there is a physical singularity at cosmological distances. The large distance singularity may be an artifact of the static restriction, since we find that the behavior at large distances is altered in a time-dependent solution using the Mc Vittie Ansatz.<br />Comment: 34 pages. This is an expansion of the previous submission to include results obtained in collaboration with Fethi M. Ramazanoglu
- Subjects :
- High Energy Physics - Theory
Physics
Quantum Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Horizon
Isotropic coordinates
FOS: Physical sciences
Astronomy and Astrophysics
General Relativity and Quantum Cosmology (gr-qc)
Mathematical Physics (math-ph)
General Relativity and Quantum Cosmology
Gravitation
Singularity
High Energy Physics - Theory (hep-th)
Space and Planetary Science
Schwarzschild metric
Polar coordinate system
Quantum Physics (quant-ph)
Mathematical Physics
Astrophysics - Cosmology and Nongalactic Astrophysics
Scalar curvature
Mathematical physics
Ansatz
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....f96beaf2537eccb9daf5f96d77eb1e64
- Full Text :
- https://doi.org/10.48550/arxiv.1308.1448