Level statistics of XXZ spin chains with discrete symmetries: Analysis through finite-size effects

Kazue Kudo, Tetsuo Deguchi

研究成果: Article査読

34 被引用数 (Scopus)

抄録

Level statistics is discussed for XXZ spin chains with discrete symmetries for some values of the next-nearest-neighbor (NNN) coupling parameter. We show how the level statistics of the finite-size systems depends on the NNN coupling and the XXZ anisotropy, which should reflect competition among quantum chaos, integrability and finite-size effects. Here discrete symmetries play a central role in our analysis. Evaluating the level-spacing distribution, the spectral rigidity and the number variance, we confirm the correspondence between non-integrability and Wigner behavior in the spectrum. We also show that non-Wigner behavior appears due to mixed symmetries and finite-size effects in some nonintegrable cases.

本文言語English
ページ(範囲)1992-2000
ページ数9
ジャーナルjournal of the physical society of japan
74
7
DOI
出版ステータスPublished - 2005 7
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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