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

Breaking of Vainshtein screening in scalar-tensor theories beyond Horndeski

単著・共著の別

共著

著者

Tsutomu Kobayashi, Yuki Watanabe, Daisuke Yamauchi

概要

The Horndeski theory of gravity is known as the most general scalar-tensor theory with second-order field equations. Recently, it was demonstrated by Gleyzes et al. that the Horndeski theory can further be generalized in such a way that although field equations are of third order, the number of propagating degrees of freedom remains the same. We study small-scale gravity in the generalized Horndeski theory, focusing in particular on an impact of the new derivative interaction beyond Horndeski on the Vainshtein screening mechanism. In the absence of the quintic Galileon term and its generalization, we show that the new interaction does not change the qualitative behavior of gravity outside and near the source: the two metric potentials coincide, Φ=Ψ⁡(∼?−1), while the gravitational coupling is given by the cosmological one and hence is time dependent in general. We find, however, that the gravitational field inside the source shows a novel behavior due to the interaction beyond Horndeski: the gravitational attraction is not determined solely from the enclosed mass and two potentials do not coincide, indicating breaking of the screening mechanism.

発表雑誌等の名称

Physical Review D

出版者

91

064013

開始ページ

終了ページ

発行又は発表の年月

2015/03

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

https://doi.org/10.1103/PhysRevD.91.064013

ID:NAID(CiNiiのID)

ID:PMID

URL

JGlobalID

arXiv ID

arXiv:1411.4130

ORCIDのPut Code

DBLP ID