Brane singularities and their avoidance
| Autor: | Ignatios Antoniadis, Spiros Cotsakis, Ifigeneia Klaoudatou |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Physics
High Energy Physics - Theory Physics and Astronomy (miscellaneous) Field (physics) 010308 nuclear & particles physics General Relativity and Cosmology Big Rip FOS: Physical sciences Perfect fluid General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences General Relativity and Quantum Cosmology Singularity High Energy Physics - Theory (hep-th) Singular solution 0103 physical sciences Gravitational singularity Brane 010306 general physics Scalar field Mathematical physics |
| Zdroj: | Class. Quantum Gravity, (2010) pp. 235018 |
| DOI: | 10.48550/arxiv.1010.6175 |
| Popis: | The singularity structure and the corresponding asymptotic behavior of a 3-brane coupled to a scalar field or to a perfect fluid in a five-dimensional bulk is analyzed in full generality using the method of asymptotic splittings. In the case of the scalar field, it is shown that the collapse singularity at a finite distance from the brane can be avoided only at the expense of making the brane world-volume positively or negatively curved. In the case where the bulk field content is parametrized by an analogue of perfect fluid with an arbitrary equation of state P=\gamma\rho between the `pressure' P and the `density' \rho, our results depend crucially on the constant fluid parameter \gamma: (i) For \gamma>-1/2, the flat brane solution suffers from a collapse singularity at finite distance, that disappears in the curved case. (ii) For \gamma Comment: 37 pages, latex, merged version of arXiv:1005.3221 and arXiv:1004.3379, to appear in Class.Quant.Grav |
| Databáze: | OpenAIRE |
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