Enveloping branes and braneworld singularities
| Autor: | Spiros Cotsakis, Ignatios Antoniadis, Ifigeneia Klaoudatou |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Physics
High Energy Physics - Theory Physics and Astronomy (miscellaneous) Differential equation Planck mass FOS: Physical sciences Perfect fluid General Relativity and Quantum Cosmology (gr-qc) General Relativity and Quantum Cosmology Connection (mathematics) Theoretical physics Singularity High Energy Physics - Theory (hep-th) Brane cosmology Gravitational singularity Brane Regular Article - Theoretical Physics Engineering (miscellaneous) Particle Physics - Theory |
| Zdroj: | The European Physical Journal. C, Particles and Fields European Physical Journal C |
| DOI: | 10.48550/arxiv.1406.0611 |
| Popis: | The existence of envelopes is studied for systems of differential equations in connection with the method of asymptotic splittings which allows to determine the singularity structure of the solutions. The result is applied to braneworlds consisting of a 3-brane in a five-dimensional bulk, in the presence of an analog of a bulk perfect fluid parametrizing a generic class of bulk matter. We find that all flat brane solutions suffer from a finite distance singularity contrary to previous claims. We then study the possibility of avoiding finite distance singularities by cutting the bulk and gluing regular solutions at the position of the brane. Further imposing physical conditions such as finite Planck mass on the brane and positive energy conditions on the bulk fluid, excludes however this possibility, as well. Comment: v2: 26 pages, matches version to appear in EPJC |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|