Nonrelativistic nambu-goldstone modes associated with spontaneously broken space-time and internal symmetries

Michikazu Kobayashi, Muneto Nitta

研究成果: Article

19 引用 (Scopus)

抄録

We show that a momentum operator of a translational symmetry may not commute with an internal symmetry operator in the presence of a topological soliton in nonrelativistic theories. As a striking consequence, there appears a coupled Nambu-Goldstone mode with a quadratic dispersion consisting of translational and internal zero modes in the vicinity of a domain wall in an O(3) σ model, a magnetic domain wall in ferromagnets with an easy axis.

元の言語English
記事番号120403
ジャーナルPhysical Review Letters
113
発行部数12
DOI
出版物ステータスPublished - 2014 9 18

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domain wall
operators
symmetry
magnetic domains
solitary waves
momentum

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

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