论文标题

BKP层次结构,仿射坐标和连接的玻感$ n $ point功能的公式

BKP Hierarchy, Affine Coordinates, and a Formula for Connected Bosonic $N$-Point Functions

论文作者

Wang, Zhiyuan, Yang, Chenglang

论文摘要

我们得出了BKP层次结构的tau功能的连接$ n $ point函数的公式。这是Zhou在[Arxiv:1507.01679]中证明的KP Tau功能公式的BKP-Analogue。此外,我们证明了KDV层次结构的tau功能$τ(\ Mathbf {t})的KP - 摩擦坐标与$τ(\ Mathbf {t}}/2)$的bkp-配合坐标的$τ(\ mathbf {t})$。作为应用程序,我们提出了一种新算法,以计算Witten-Kontsevich Tau功能和Brézin-Gross-Witten-Witten Tau功能的自由能。

We derive a formula for the connected $n$-point functions of a tau-function of the BKP hierarchy in terms of its affine coordinates. This is a BKP-analogue of a formula for KP tau-functions proved by Zhou in [arXiv:1507.01679]. Moreover, we prove a simple relation between the KP-affine coordinates of a tau-function $τ(\mathbf{t})$ of the KdV hierarchy and the BKP-affine coordinates of $τ(\mathbf{t}/2)$. As applications, we present a new algorithm to compute the free energies of the Witten-Kontsevich tau-function and the Brézin-Gross-Witten tau-function.

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