Scalar field confinement as a model for accreting systems

Details Scalar field confinement as a model for accreting systems Scalar field confinement as a model for accreting systems

2007-05-04

arxiv.org/abs/0705.0644v1

Class.Quant.Grav.24:3235-3258,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages; accepted for publication in Classical and Quantum Gravity

Scientific paper

10.1088/0264-9381/24/13/007

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.

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