論文

基本情報

氏名 山内 大介
氏名(カナ) ヤマウチ ダイスケ
氏名(英語) Yamauchi Daisuke
所属 理学部 物理学科
職名 講師
researchmap研究者コード B000327615
researchmap機関 岡山理科大学

題名

Modified gravity inside astrophysical bodies

単著・共著の別

共著

著者

Ryo Saito, Daisuke Yamauchi, Shuntaro Mizuno, Jerome Gleyzes, David Langlois

概要

Many theories of modified gravity, including the well studied Horndeski models, are characterized by a screening mechanism that ensures that standard gravity is recovered near astrophysical bodies. In a recently introduced class of gravitational theories that goes beyond Horndeski, it has been found that new derivative interactions lead to a partial breaking of the Vainshtein screening mechanism inside any gravitational source, although not outside. We study the impact of this new type of deviation from standard gravity on the density profile of a spherically symmetric matter distribution, in the nonrelativistic limit. For simplicity, we consider a polytropic equation of state and derive the modifications to the standard Lane-Emden equations. We also show the existence of a universal upper bound on the amplitude of this type of modified gravity, independently of the details of the equation of state.

発表雑誌等の名称

Journal of Cosmology and Astroparticle Physics

出版者

06

008

開始ページ

終了ページ

発行又は発表の年月

2015/06

査読の有無

有り

招待の有無

無し

記述言語

英語

掲載種別

研究論文(学術雑誌)

ISSN

ID:DOI

10.1088/1475-7516/2015/06/008

ID:NAID(CiNiiのID)

ID:PMID

URL

JGlobalID

arXiv ID

1503.01448

ORCIDのPut Code

DBLP ID