Fate of domain walls in 5D gravitational theory with compact extra dimension

Hiroyuki Abe, Shuntaro Aoki, Yu Asai, Yutaka Sakamura*

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We pursue the time evolution of the domain walls in 5D gravitational theory with a compact extra dimension by numerical calculation. In order to avoid a kink-antikink pair that decays into the vacuum, we introduce a topological winding in the field space. In contrast to the case of non-gravitational theories, there is no static domain-wall solution in the setup. In the case that the minimal value of the potential is non-negative, we find that both the 3D space and the extra dimension will expand at late times if the initial value of the Hubble parameter is chosen as positive. The wall width almost remains constant during the evolution. In other cases, the extra dimension diverges and the 3D space shrinks to zero at a finite time.

本文言語English
論文番号173
ジャーナルJournal of High Energy Physics
2020
12
DOI
出版ステータスPublished - 2020 12月

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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