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arXiv 1507.04093hep-thmath-phmath.AGmath.MP
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从$r$ -旋交数到Hodge积分

From $r$-Spin Intersection Numbers to Hodge Integrals

Xiang-Mao Ding, Yuping Li, Lingxian Meng

摘要:

广义Kontsevich矩阵模型(GKMM)是$r$ -自旋交叉数的配分函数,它具有一定的势能.我们表示这个GKMM的费米子和扩展的Schur多项式的玻色子费米子对应,并将其与一个Hurwitz配分函数和霍奇分区的运营商在$\widehat{GL}(\infty)$组。然后,从$r$ -自旋交叉数配分函数的一个$W_{1+\infty}$约束出发,得到了Hodge配分函数的一个$W_{1+\infty}$约束. $W_{1+\infty}$约束完全决定了Hodge配分函数的Schur多项式展开式。

英文摘要:

Generalized Kontsevich Matrix Model (GKMM) with a certain given potential is the partition function of $r$-spin intersection numbers. We represent this GKMM in terms of fermions and expand it in terms of the Schur polynomials by boson-fermion correspondence, and link it with a Hurwitz partition function and a Hodge partition by operators in a $\widehat{GL}(\infty)$ group. Then, from a $W_{1+\infty}$ constraint of the partition function of $r$-spin intersection numbers, we get a $W_{1+\infty}$ constraint for the Hodge partition function. The $W_{1+\infty}$ constraint completely determines the Schur polynomials expansion of the Hodge partition function.

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