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The Burgers--KdV hierarchy was introduced towards understanding intersection numbers on the moduli space of Riemann surfaces with boundaries. The goal of this paper is to derive the Dubrovin--Zhang type loop equation for the topological…

Mathematical Physics · Physics 2024-09-20 Di Yang , Chunhui Zhou

Using the connection between intersection theory on the Deligne-Mumford spaces and the edge scaling of the GUE matrix model (see math.CO/9903176, math.AG/0101147), we express the n-point functions for the intersection numbers as…

Algebraic Geometry · Mathematics 2007-05-23 Andrei Okounkov

The matrix model of topological field theory for the moduli space of p-th spin curves is extended to the case of the Lie algebra of the orthogonal group. We derive a new duality relation for the expectation values of characteristic…

Mathematical Physics · Physics 2009-12-10 Edouard Brezin , Shinobu Hikami

In this paper we establish relations between three enumerative geometry tau-functions, namely the Kontsevich-Witten, Hurwitz and Hodge tau-functions. The relations allow us to describe the tau-functions in terms of matrix integrals,…

High Energy Physics - Theory · Physics 2015-05-14 A. Alexandrov

In this paper we relate volumes of moduli spaces of super Riemann surfaces to integrals over the moduli space of stable Riemann surfaces $\overline{\cal M}_{g,n}$. This allows us to prove via algebraic geometry a recursion between the…

Algebraic Geometry · Mathematics 2025-12-24 Paul Norbury

We formulate Virasoro constraints for the generating functions of the intersection numbers on Hassett's moduli of weighted pointed curves and show that they are governed by the KdV integrable hierarchy.

Algebraic Geometry · Mathematics 2020-08-26 You-Cheng Chou , Yuan-Pin Lee

We present in this paper a differential version of Mirzakhani's recursion relation for the Weil-Petersson volumes of the moduli spaces of bordered Riemann surfaces. We discover that the differential relation, which is equivalent to the…

Quantum Algebra · Mathematics 2007-05-23 Motohico Mulase , Brad Safnuk

In this paper, we construct the cut-and-join operator description for the generating functions of all intersection numbers of $\psi$, $\kappa$, and $\Theta$ classes on the moduli spaces $\overline{\mathcal M}_{g,n}$. The cut-and-join…

Algebraic Geometry · Mathematics 2025-02-19 Alexander Alexandrov

This article investigates the intersection numbers of the moduli space of p-spin curves with the help of matrix models. The explicit integral representations that are derived for the generating functions of these intersection numbers…

Mathematical Physics · Physics 2020-07-15 E. Brezin , S. Hikami

In this paper we study relations between intersection numbers on moduli spaces of curves and Hurwitz numbers. First, we prove two formulas expressing Hurwitz numbers of (generalized) polynomials via intersections on moduli spaces of curves.…

Algebraic Geometry · Mathematics 2010-10-04 Sergei Shadrin

Starting from the ELSV formula, we derive a number of new equations on the generating functions for Hodge integrals over the moduli space of complex curves. This gives a new simple and uniform treatment of certain known results on Hodge…

Algebraic Geometry · Mathematics 2008-09-22 M. Kazarian

A complete set of the Virasoro and W-constraints for the Kontsevich-Penner model, which conjecturally describes intersections on moduli spaces of open curves, was derived in our previous work. Here we show that these constraints can be…

Mathematical Physics · Physics 2017-09-13 Alexander Alexandrov

We expand correlation functions of the Langmann-Szabo-Zarembo (LSZ) model in terms of intersection numbers on the moduli space of complex curves. This provides an explicit, physically motivated example for the expansion of correlation…

Mathematical Physics · Physics 2022-12-05 Finn Bjarne Kohl , Raimar Wulkenhaar

In this paper, we continue our investigation of the triple Hodge integrals satisfying the Calabi-Yau condition. For the tau-functions, which generate these integrals, we derive the complete families of the Heisenberg-Virasoro constraints.…

Algebraic Geometry · Mathematics 2025-02-20 Alexander Alexandrov

We conclude the construction of $r$-spin theory in genus zero for Riemann surfaces with boundary. In particular, we define open $r$-spin intersection numbers, and we prove that their generating function is closely related to the wave…

Symplectic Geometry · Mathematics 2022-12-01 Alexandr Buryak , Emily Clader , Ran J. Tessler

We consider $d$-fold branched coverings of the projective plane $\mathbb{RP}^2$ and show that the hypergeometric tau function of the BKP hierarchy of Kac and van de Leur is the generating function for weighted sums of the related Hurwitz…

Mathematical Physics · Physics 2016-11-29 Sergei Natanzon , Alexander Orlov

In this note, we present a recursive formula for the full partition function Z of descendent integrals over moduli spaces of open and closed Riemann surfaces, assuming the conjecture recently proposed by Pandharipande, Solomon and Tessler…

Mathematical Physics · Physics 2014-09-29 Hua-Zhong Ke

We review some relations occurring between the combinatorial intersection theory on the moduli spaces of stable curves and the asymptotic behavior of the 't Hooft-Kontsevich matrix integrals. In particular, we give an alternative proof of…

Algebraic Geometry · Mathematics 2013-09-30 Domenico Fiorenza , Riccardo Murri

We show that any polynomial tau-function of the s-component KP and the BKP hierarchies can be interpreted as a zero mode of an appropriate combinatorial generating function. As an application, we obtain explicit formulas for all polynomial…

Representation Theory · Mathematics 2021-02-24 Victor G. Kac , Natasha Rozhkovskaya , Johan van de Leur

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=1/2…

High Energy Physics - Theory · Physics 2021-06-02 S. Hikami , E. Brezin