Scalar field confinement as a model for accreting systems
| Autor: | Miguel Megevand, Ignacio Olabarrieta, Luis Lehner |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) Spacetime 010308 nuclear & particles physics General relativity Astrophysics::High Energy Astrophysical Phenomena Scalar (mathematics) FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences General Relativity and Quantum Cosmology Black hole symbols.namesake Theoretical physics 0103 physical sciences symbols Circular symmetry Einstein 010306 general physics Scalar field Klein–Gordon equation |
| Zdroj: | Classical and Quantum Gravity. 24:3235-3258 |
| ISSN: | 1361-6382 0264-9381 |
| DOI: | 10.1088/0264-9381/24/13/007 |
| Popis: | We investigate the possibility to localize scalar field configurations as a model for black hole accretion. We analyze and resolve difficulties encountered when localizing scalar fields in General Relativity. We illustrate this ability with a simple spherically symmetric model which can be used to study features of accreting shells around a black hole. This is accomplished by prescribing a scalar field with a coordinate dependent potential. Numerical solutions to the Einstein-Klein-Gordon equations are shown, where a scalar filed is indeed confined within a region surrounding a black hole. The resulting spacetime can be described in terms of simple harmonic time dependence. 18 pages; accepted for publication in Classical and Quantum Gravity |
| Databáze: | OpenAIRE |
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