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Low-temperature asymptotic of the transverse dynamical structure factor for a magnetically polarized XX chain
Journal of Statistical Mechanics: Theory and Experiment ( IF 2.2 ) Pub Date : 2020-07-31 , DOI: 10.1088/1742-5468/ab9eb5
P N Bibikov

Dyson equation for the real two-time commutator retarded one-magnon Green function of the ferromagnetically polarized XX chain is suggested following the Plakida-Tserkovnikov algorithm. Starting from this result a low-temperature integral representation for the corresponding magnon self energy is obtained by the truncated form factor expansion however without any resummations. Within the suggested approach the low-temperature asymptotics of the transverse dynamical structure factor may be readily studied. Some obtained line shapes are presented.

中文翻译:

磁极化 XX 链横向动力学结构因子的低温渐近

根据 Plakida-Tserkovnikov 算法,提出了铁磁极化 XX 链的实际二次换向器延迟单磁子格林函数的戴森方程。从该结果出发,通过截断形状因子展开获得相应磁振子自能的低温积分表示,但没有任何重新求和。在建议的方法中,可以很容易地研究横向动力结构因子的低温渐近性。给出了一些获得的线条形状。
更新日期:2020-07-31
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