Unified Description of Nambu-Goldstone Bosons without Lorentz Invariance
書誌事項
- 公開日
- 2012-06-21
- 資源種別
- journal article
- 権利情報
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- http://link.aps.org/licenses/aps-default-license
- http://link.aps.org/licenses/aps-default-accepted-manuscript-license
- DOI
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- 10.1103/physrevlett.108.251602
- 10.48550/arxiv.1203.0609
- 公開者
- American Physical Society (APS)
この論文をさがす
説明
Using the effective Lagrangian approach, we clarify general issues about Nambu-Goldstone bosons without Lorentz invariance. We show how to count their number and study their dispersion relations. Their number is less than the number of broken generators when some of them form canonically conjugate pairs. The pairing occurs when the generators have a nonzero expectation value of their commutator. For non-semi-simple algebras, central extensions are possible. The underlying geometry of the coset space in general is partially symplectic.
5 pages, REVTeX 4.1; v3: published version
収録刊行物
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- Physical Review Letters
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Physical Review Letters 108 (25), 251602-, 2012-06-21
American Physical Society (APS)
