Q-polynomial expansion for Brézin-Gross-Witten tau-function
Q-polynomial expansion for Brézin-Gross-Witten tau-function
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Brézin-Gross-Witten tau 函数的 Q 多项式展开
DOI:
10.1016/j.aim.2022.108456
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发表时间:
2021
影响因子:
1.7
通讯作者:
Chenglang Yang
中科院分区:
文献类型:
--
作者:
Xiaobo Liu;Chenglang Yang
In this paper, we prove a conjecture of Alexandrov that the generalized Brézin-Gross-Witten tau-functions are hypergeometric tau functions of BKP hierarchy after re-scaling. In particular, this shows that the original BGW tau-function, which has enumerative geometric interpretations, can be represented as a linear combination of Schur Q-polynomials with simple coefficients.