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arXiv 1409.4099math-phmath.MPnlin.SI
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量子自旋链与经典力学的可积多体系统

Quantum spin chains and integrable many-body systems of classical mechanics

A. Zabrodin

摘要:

本文综述了最近发现的可积量子自旋链与经典力学可积多体系统之间的有趣联系。这种联系的实质在于,前一种模型的量子哈密顿量的谱问题与后一种模型的Lax矩阵的一类逆谱问题密切相关。为了简单起见,我们专注于最透明和最熟悉的情况下,自旋链的N个网站上构造的GL(2)-不变的R-矩阵。它们与经典的N粒子Ruijsenaars-Schneider系统有关,已知该系统是Calogero-Moser系统的可积变形。作为一个明确的例子,情况N=2被认为是详细的。

英文摘要:

This note is a review of the recently revealed intriguing connection between integrable quantum spin chains and integrable many-body systems of classical mechanics. The essence of this connection lies in the fact that the spectral problem for quantum Hamiltonians of the former models is closely related to a sort of inverse spectral problem for Lax matrices of the latter ones. For simplicity, we focus on the most transparent and familiar case of spin chains on N sites constructed by means of the GL(2)-invariant R-matrix. They are related to the classical Ruijsenaars-Schneider system of N particles, which is known to be an integrable deformation of the Calogero-Moser system. As an explicit example the case N=2 is considered in detail.

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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