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

Kazue Kudo, Katsuhiro Nakamura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number144427
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number14
DOIs
Publication statusPublished - 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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