Journal of Statistical Physics ( IF 1.6 ) Pub Date : 2021-05-18 , DOI: 10.1007/s10955-021-02776-4 S. Hikami , E. Brézin
We report here an extension of a previous work in which we have shown that matrix models provide a tool to compute the intersection numbers of p-spin curves. We discuss further an extension to half-integer p, and in more details for \(p=\frac{1}{2}\) and \(p=\frac{3}{2}\). In those new cases one finds contributions from the Ramond sector, which were not present for positive integer p. The existence of Virasoro constraints, in particular a string equation, is considered also for half-integral spins. The contribution of the boundary of a Riemann surface, is investigated through a logarithmic matrix model. The supersymmetric random matrices provide extensions to mixed positive and negative p punctures.
中文翻译:
矩阵模型II中的穿刺和p旋转曲线
我们在这里报告了先前工作的扩展,在该工作中我们已经证明了矩阵模型提供了一种计算p-自旋曲线的相交数的工具。我们将进一步讨论对半整数p的扩展,并详细讨论\(p = \ frac {1} {2} \)和\(p = \ frac {3} {2} \)。在这些新情况下,人们发现了来自拉蒙德部门的贡献,而对于正整数p则不存在。对于半积分自旋,也考虑存在Virasoro约束,尤其是字符串方程。通过对数矩阵模型研究了黎曼曲面边界的贡献。超对称随机矩阵提供了对正负p混合的扩展 穿刺。