Energy diffusion in frustrated quantum spin chains exhibiting Gaussian orthogonal ensemble level statistics

Kazue Kudo, Katsuhiro Nakamura

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Frustrated quantum XXZ spin chains with the next-nearest-neighbor couplings are typically deterministic many-body systems exhibiting Gaussian orthogonal ensemble spectral statistics. We investigate energy diffusion for these spin chains in the presence of a periodically oscillating magnetic field. Diffusion coefficients are found to obey the power law with respect to both the field strength and driving frequency with its power varying depending on the linear response and nonperturbative regimes. The widths of the linear response and the nonperturbative regimes depend on the strength of frustrations. We have also elucidated a mechanism for oscillation of energy diffusion in the case of weakened frustrations.

本文言語English
論文番号144427
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
71
14
DOI
出版ステータスPublished - 2005
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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