Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fields
We analyze condensation behaviors of neutral scalar fields outside horizonless reflecting stars in the Einstein-Maxwell-scalar gravity. It was known that minimally coupled neutral scalar fields cannot exist outside horizonless reflecting stars. In this work, we consider non-minimal couplings between...
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doaj-9a4be71f610d4826a7a60bf8323419d72020-11-25T02:41:53ZengElsevierPhysics Letters B0370-26932020-05-01804Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fieldsYan Peng0School of Mathematical Sciences, Qufu Normal University, Qufu, Shandong 273165, ChinaWe analyze condensation behaviors of neutral scalar fields outside horizonless reflecting stars in the Einstein-Maxwell-scalar gravity. It was known that minimally coupled neutral scalar fields cannot exist outside horizonless reflecting stars. In this work, we consider non-minimal couplings between scalar fields and Maxwell fields, which is included to aim to trigger formations of scalar hairs. We analytically demonstrate that there is no hair theorem for small coupling parameters below a bound. For large coupling parameters above the bound, we numerically obtain regular scalar hairy configurations supported by horizonless reflecting stars.http://www.sciencedirect.com/science/article/pii/S0370269320301763 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yan Peng |
spellingShingle |
Yan Peng Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fields Physics Letters B |
author_facet |
Yan Peng |
author_sort |
Yan Peng |
title |
Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fields |
title_short |
Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fields |
title_full |
Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fields |
title_fullStr |
Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fields |
title_full_unstemmed |
Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fields |
title_sort |
scalarization of horizonless reflecting stars: neutral scalar fields non-minimally coupled to maxwell fields |
publisher |
Elsevier |
series |
Physics Letters B |
issn |
0370-2693 |
publishDate |
2020-05-01 |
description |
We analyze condensation behaviors of neutral scalar fields outside horizonless reflecting stars in the Einstein-Maxwell-scalar gravity. It was known that minimally coupled neutral scalar fields cannot exist outside horizonless reflecting stars. In this work, we consider non-minimal couplings between scalar fields and Maxwell fields, which is included to aim to trigger formations of scalar hairs. We analytically demonstrate that there is no hair theorem for small coupling parameters below a bound. For large coupling parameters above the bound, we numerically obtain regular scalar hairy configurations supported by horizonless reflecting stars. |
url |
http://www.sciencedirect.com/science/article/pii/S0370269320301763 |
work_keys_str_mv |
AT yanpeng scalarizationofhorizonlessreflectingstarsneutralscalarfieldsnonminimallycoupledtomaxwellfields |
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1724776662782967808 |