No short hair behaviors of ultra-compact stars

No short hair behaviors of ultra-compact stars

Abstract In the black hole spacetime, a no short hair theorem was proved, which states that the effective radius of black hole hairs must extend beyond the null circular orbit. In the present paper, in the horizonless gravity, we find a similar no short hair behavior that the effective radius of mat...

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Main Author: Yan Peng
Format: Article
Language:English
Published: SpringerOpen 2021-03-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-021-09034-7
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spelling doaj-214bd372317a4adda56d24d3e406a4162021-03-21T12:46:25ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-03-018131310.1140/epjc/s10052-021-09034-7No short hair behaviors of ultra-compact starsYan Peng0School of Mathematical Sciences, Qufu Normal UniversityAbstract In the black hole spacetime, a no short hair theorem was proved, which states that the effective radius of black hole hairs must extend beyond the null circular orbit. In the present paper, in the horizonless gravity, we find a similar no short hair behavior that the effective radius of matter fields must also extend beyond the null circular orbit of ultra-compact stars. We should emphasize that the theorem presented in this manuscript is valid only for spatially regular matter configurations whose energy-momentum traces are non-negative.https://doi.org/10.1140/epjc/s10052-021-09034-7
collection DOAJ
language English
format Article
sources DOAJ
author Yan Peng
spellingShingle Yan Peng
No short hair behaviors of ultra-compact stars
European Physical Journal C: Particles and Fields
author_facet Yan Peng
author_sort Yan Peng
title No short hair behaviors of ultra-compact stars
title_short No short hair behaviors of ultra-compact stars
title_full No short hair behaviors of ultra-compact stars
title_fullStr No short hair behaviors of ultra-compact stars
title_full_unstemmed No short hair behaviors of ultra-compact stars
title_sort no short hair behaviors of ultra-compact stars
publisher SpringerOpen
series European Physical Journal C: Particles and Fields
issn 1434-6044
1434-6052
publishDate 2021-03-01
description Abstract In the black hole spacetime, a no short hair theorem was proved, which states that the effective radius of black hole hairs must extend beyond the null circular orbit. In the present paper, in the horizonless gravity, we find a similar no short hair behavior that the effective radius of matter fields must also extend beyond the null circular orbit of ultra-compact stars. We should emphasize that the theorem presented in this manuscript is valid only for spatially regular matter configurations whose energy-momentum traces are non-negative.
url https://doi.org/10.1140/epjc/s10052-021-09034-7
work_keys_str_mv AT yanpeng noshorthairbehaviorsofultracompactstars
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