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In this article, we study in detail the modified topological recursion of the one matrix model for arbitrary $\beta$ in the one cut case. We show that for polynomial potentials, the recursion can be computed as a sum of residues. However…

数学物理 · 物理学 2015-05-28 Olivier Marchal

Continuum Virasoro constraints in the two-cut hermitian matrix models are derived from the discrete Ward identities by means of the mapping from the $GL(\infty )$ Toda hierarchy to the nonlinear Schr\"odinger (NLS) hierarchy. The invariance…

高能物理 - 理论 · 物理学 2017-02-01 Waichi Ogura

We present an exact solution of the $O(n)$ model on a random lattice. The coupling constant space of our model is parametrized in terms of a set of moment variables and the same type of universality with respect to the potential as observed…

高能物理 - 理论 · 物理学 2008-11-26 B. Eynard , C. Kristjansen

We compute the large scale (macroscopic) correlations in ensembles of normal random matrices with an arbitrary measure and in ensembles of general non-Hermition matrices with a class of non-Gaussian measures. In both cases the eigenvalues…

高能物理 - 理论 · 物理学 2008-11-26 P. Wiegmann , A. Zabrodin

We discuss the extension of the maximal-unitarity method to two loops, focusing on the example of the planar double box. Maximal cuts are reinterpreted as contour integrals, with the choice of contour fixed by the requirement that integrals…

高能物理 - 理论 · 物理学 2012-12-11 Henrik Johansson , David A. Kosower , Kasper J. Larsen

We give an exponential upper and a quadratic lower bound on the number of pairwise non-isotopic simple closed curves can be placed on a closed surface of genus g such that any two of the curves intersects at most once. Although the gap is…

几何拓扑 · 数学 2013-01-04 Justin Malestein , Igor Rivin , Louis Theran

Cutting planes (cuts) are crucial for solving Mixed Integer Linear Programming (MILP) problems. Advanced MILP solvers typically rely on manually designed heuristic algorithms for cut selection, which require much expert experience and…

最优化与控制 · 数学 2024-12-11 Xuefeng Zhang , Liangyu Chen , Zhengfeng Yang , Zhenbing Zeng

This paper studies the global structure of algebraic curves defined by generalized unitarity cut of four-dimensional three-loop diagrams with eleven propagators. The global structure is a topological invariant that is characterized by the…

高能物理 - 理论 · 物理学 2015-03-31 Jonathan D. Hauenstein , Rijun Huang , Dhagash Mehta , Yang Zhang

This paper provides the constructive loop vertex expansion for stable matrix models with (single trace) interactions of arbitrarily high even order in the Hermitian and real symmetric cases. It relies on a new and simpler method which can…

数学物理 · 物理学 2019-10-30 Thomas Krajewski , Vincent Rivasseau , Vasily Sazonov

We find the microscopic spectral densities and the spectral correlators associated with multicritical behavior for both hermitian and complex matrix ensembles, and show their universality. We conjecture that microscopic spectral densities…

高能物理 - 理论 · 物理学 2009-10-30 G. Akemann , P. H. Damgaard , U. Magnea , S. M. Nishigaki

In the BMN approach to N=4 SYM a large class of correlators of interest are expressible in terms of expectation values of traces of words in a zero-dimensional Gaussian complex matrix model. We develop a loop-equation based, analytic…

高能物理 - 理论 · 物理学 2009-11-07 B. Eynard , C. Kristjansen

We establish a strong-weak coupling duality between two types of free matrix models. In the large-N limit, the real-symmetric matrix model is dual to the quaternionic-real matrix model. Using the large-N conformal invariant collective field…

高能物理 - 理论 · 物理学 2009-11-10 I. Andrić , D. Jurman

This Note aims at presenting a simple and efficient procedure to derive the structure of high-order corrector estimates for the homogenization limit applied to a semi-linear elliptic equation posed in perforated domains. Our working…

偏微分方程分析 · 数学 2016-03-15 Khoa Vo , Adrian Muntean

The duality relation between one-loop integrals and phase-space integrals, developed in a previous work, is extended to higher-order loops. The duality relation is realized by a modification of the customary +i0 prescription of the Feynman…

高能物理 - 唯象学 · 物理学 2011-03-17 Isabella Bierenbaum , Stefano Catani , Petros Draggiotis , German Rodrigo

We derive loop equations for the one-link correlators of gauge and scalar fields in the Kazakov-Migdal model. These equations determine the solution of the model in the large N limit and are similar to analogous equations for the Hermitean…

高能物理 - 理论 · 物理学 2015-06-26 M. I. Dobroliubov , Yu. Makeenko , G. W. Semenoff

We prove that the category of systems of sesquilinear forms over a given hermitian category is equivalent to the category of unimodular 1-hermitian forms over another hermitian category. The sesquilinear forms are not required to be…

环与代数 · 数学 2015-04-07 Eva Bayer-Fluckiger , Uriya A. First , Daniel A. Moldovan

Hermitian hulls of linear codes are interesting for theoretical and practical reasons alike. In terms of recent application, linear codes whose hulls meet certain conditions have been utilized as ingredients to construct…

信息论 · 计算机科学 2024-04-09 Gaojun Luo , Lin Sok , Martianus Frederic Ezerman , San Ling

We review a class of matrix models whose degrees of freedom are matrices with anticommuting elements. We discuss the properties of the adjoint fermion one-, two- and gauge invariant D-dimensional matrix models at large-N and compare them…

高能物理 - 理论 · 物理学 2009-10-30 Gordon W. Semenoff , Richard J. Szabo

In this paper we present a new bound obtained with the probabilistic method for the solution of the Set Covering problem with unit costs. The bound is valid for problems of fixed dimension, thus extending previous similar asymptotic…

组合数学 · 数学 2014-07-18 Giovanni Felici , Sokol Ndreca , Aldo Procacci , Benedetto Scoppola

We find a new class of the Fuchsian equations, which have an algebraic geometric solutions with the parameter belonging to a hyperelliptic curve. Methods of calculating the algebraic genus of the curve, and its branching points, are…

经典分析与常微分方程 · 数学 2007-05-23 Alexander O. Smirnov