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arXiv 1003.5654cond-mat.stat-mechcond-mat.str-el
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一维量子铁磁体CoNb2O6中扭结的弱禁闭

On the weak confinement of kinks in the one-dimensional quantum ferromagnet CoNb2O6

S. B. Rutkevich

摘要:

在最近的论文Coldea等人(2010 Science { \bf 327} 177)中报告了在低温下观察到Ising自旋链铁磁体CoNb 2 O 6中的扭结的弱约束。为了解释通过中子散射测量的磁激发的整个光谱,他们引入了一个唯象模型,该模型只考虑了自旋链的两个扭结配置。我们给出了这个模型的精确解。用贝塞尔函数得到了两扭束缚态能谱和中子在这些磁模上散射的相对强度的显式表达式。

英文摘要:

In a recent paper Coldea et al (2010 Science {\bf 327} 177) report observation of the weak confinement of kinks in the Ising spin chain ferromagnet CoNb2O6 at low temperatures. To interpret the entire spectra of magnetic excitations measured via neutron scattering, they introduce a phenomenological model, which takes into account only the two-kink configurations of the spin chain. We present the exact solution of this model. The explicit expressions for the two-kink bound-state energy spectra and for the relative intensities of neutron scattering on these magnetic modes are obtained in terms of the Bessel function.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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