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arXiv 0910.4690math.QAmath-phmath.AGmath.MP
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gl_{N+1} Gaudin模型的Bethe代数与主函数临界集上的函数代数

Bethe algebra of the gl_{N+1} Gaudin model and algebra of functions on the critical set of the master function

E. Mukhin, V. Tarasov, A. Varchenko

摘要:

考虑有限维不可约gl_{N+1} -模的张量积及其到不可约模的分解。gl_{N+1} Gaudin模型为该分解的每个重数空间分配作用于重数空间的线性算子的交换(Bethe)代数。Bethe代数方法是一种求Bethe代数的特征向量和特征值的方法。一个从一个合适的(主)函数的临界点开始,构造Bethe代数的特征向量。本文研究了伴随主函数的临界集上的函数代数,证明了该代数在自身上的作用同构于Bethe代数在重数空间的适当子空间上的作用.作为一个副产品,我们证明了Bethe向量对应于不同的临界点的主功能是线性无关,特别是,非零。

英文摘要:

Consider a tensor product of finite-dimensional irreducible gl_{N+1}-modules and its decomposition into irreducible modules. The gl_{N+1} Gaudin model assigns to each multiplicity space of that decomposition a commutative (Bethe) algebra of linear operators acting on the multiplicity space. The Bethe ansatz method is a method to find eigenvectors and eigenvalues of the Bethe algebra. One starts with a critical point of a suitable (master) function and constructs an eigenvector of the Bethe algebra. In this paper we consider the algebra of functions on the critical set of the associated master function and show that the action of this algebra on itself is isomorphic to the action of the Bethe algebra on a suitable subspace of the multiplicity space. As a byproduct we prove that the Bethe vectors corresponding to different critical points of the master function are linearly independent and, in particular, nonzero.

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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