Temporally, spatially, or lightlike modulated vacua in Lorentz invariant theories

Sven Bjarke Gudnason, Muneto Nitta, Shin Sasaki, Ryo Yokokura

研究成果: Article査読

8 被引用数 (Scopus)

抄録

We study the vacuum structure of a class of Lorentz-invariant field theories where the vacuum expectation values are not constant but are (phase) modulated. The vacua are classified into spatial, temporal, and lightlike modulation types according to the patterns of spontaneous breaking of translational symmetry. The conditions for having temporal or lightlike modulated vacua imply severe constraints on the models. We utilize the notion of generalized Nambu-Goldstone modes which appear in the modulated vacua. Finally, we examine fluctuation modes around these vacua and discuss their dynamics and the absence of ghosts.

本文言語English
論文番号045011
ジャーナルPhysical Review D
99
4
DOI
出版ステータスPublished - 2019 2 15

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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