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arXiv 2103.02508hep-thmath-phmath.MP
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椭圆型Ruijsenaars系统的对偶性与椭圆对称函数

Duality in elliptic Ruijsenaars system and elliptic symmetric functions

A. Mironov, A. Morozov, Y. Zenkevich

摘要:

我们证明了对称椭圆多项式$E_λ(x)$最初发现的广义Noumi-Shiraishi函数的研究是椭圆Ruijsenaars-Schneider(eRS)哈密尔顿算子的本征函数的母函数变量$y_i$(替代的杨图变量$λ$)。这意味着它们是双eRS系统的本征函数。同时,它们在Schur标积中的正交补$P_R(x)$是Koroteev-Shakirov(KS)Hamilton算子椭圆约化的本征函数.这意味着后者与对偶eRS哈密尔顿算子通过某种神秘的正交变换相关,该正交变换仅在时间变量的整个空间上定义良好,而坐标$x_i$仅在Miwa变换后出现。这一观察解释了从KS哈密顿量的双椭圆形式得到明显的自对偶哈密顿量的困难。

英文摘要:

We demonstrate that the symmetric elliptic polynomials $E_λ(x)$ originally discovered in the study of generalized Noumi-Shiraishi functions are eigenfunctions of the elliptic Ruijsenaars-Schneider (eRS) Hamiltonians that act on the mother function variable $y_i$ (substitute of the Young-diagram variable $λ$). This means they are eigenfunctions of the dual eRS system. At the same time, their orthogonal complements in the Schur scalar product, $P_R(x)$ are eigenfunctions of the elliptic reduction of the Koroteev-Shakirov (KS) Hamiltonians. This means that these latter are related to the dual eRS Hamiltonians by a somewhat mysterious orthogonality transformation, which is well defined only on the full space of time variables, while the coordinates $x_i$ appear only after the Miwa transform. This observation explains the difficulties with getting the apparently self-dual Hamiltonians from the double elliptic version of the KS Hamiltonians.

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