arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1010.3699math-phcond-mat.stat-mechhep-thmath.MP
收藏

Baxter Q算子与Yangians表示

Baxter Q-Operators and Representations of Yangians

Vladimir V. Bazhanov, Rouven Frassek, Tomasz Lukowski, Carlo Meneghelli, Matthias Staudacher

摘要:

我们开发了一种新的方法,巴克斯特Q-运营商,将它们与理论的Yangians,这是最简单的例子量子群。在这里,我们开辟了这一理论的新篇章,并研究了与谐振子代数相联系的Yang-Baxter方程的某些退化解。杨-巴克斯特方程的这些无限状态解通过标准的融合过程作为其他解的基本的“部分子”构建块。作为方法的第一个例子,我们考虑sl(n)紧自旋链,并推导出所有相关的交换转移矩阵和Q-算子的完整的操作函数方程的层次。这导致了这些链的系统和透明的解决方案,其中嵌套的Bethe方程是以完全代数的方式导出的,而不参考传统的Bethe代数技术。

英文摘要:

We develop a new approach to Baxter Q-operators by relating them to the theory of Yangians, which are the simplest examples for quantum groups. Here we open up a new chapter in this theory and study certain degenerate solutions of the Yang-Baxter equation connected with harmonic oscillator algebras. These infinite-state solutions of the Yang-Baxter equation serve as elementary, "partonic" building blocks for other solutions via the standard fusion procedure. As a first example of the method we consider sl(n) compact spin chains and derive the full hierarchy of operatorial functional equations for all related commuting transfer matrices and Q-operators. This leads to a systematic and transparent solution of these chains, where the nested Bethe equations are derived in an entirely algebraic fashion, without any reference to the traditional Bethe ansatz techniques.

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。

↑