Dynamical stability for finite quantum spin chains against a time-periodic inhomogeneous perturbation

Kazue Kudo, Katsuhiro Nakamura

研究成果: Article査読

抄録

We investigate dynamical stability of the ground state against a time-periodic and spatially-inhomogeneous magnetic field for finite quantum XXZ spin chains. We use the survival probability as a measure of stability and demonstrate that it decays as P(t) ∝ t-1/2 under a certain condition. The dynamical properties should also be related to the level statistics of the XXZ spin chains with a constant spatially-inhomogeneous magnetic field. The level statistics depends on the anisotropy parameter and the field strength. We show how the survival probability depends on the anisotropy parameter, the strength and frequency of the field.

本文言語English
ページ(範囲)166-171
ページ数6
ジャーナルChaos, Solitons and Fractals
40
1
DOI
出版ステータスPublished - 2009 4 15
外部発表はい

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 数学 (全般)
  • 物理学および天文学(全般)
  • 応用数学

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