Regular scalar field around reflecting stars and black holes, and reflecting star polarization
The existence of a regular non-trivial scalar field in the background of an asymptotically flat static reflecting star is discussed. The scalar field is assumed to be conformally coupled to the outside matter. The induced scalar charge is determined and the required conditions to have regular field...
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Published in | Journal of cosmology and astroparticle physics Vol. 2019; no. 12; p. 5 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Bristol
IOP Publishing
01.12.2019
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Subjects | |
Online Access | Get full text |
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Summary: | The existence of a regular non-trivial scalar field in the background of an asymptotically flat static reflecting star is discussed. The scalar field is assumed to be conformally coupled to the outside matter. The induced scalar charge is determined and the required conditions to have regular field are obtained. The results are compared with the case of a black hole. Conditions to have regular non-trivial scalar field out of the black hole horizon are investigated. We show that in the presence of a scalar source, in contrast to the black holes, the reflecting star becomes polarized. |
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ISSN: | 1475-7516 1475-7516 |
DOI: | 10.1088/1475-7516/2019/12/005 |