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We propose an improved iterative scheme for calculating higher genus contributions to the multi-loop (or multi-point) correlators and the partition function of the hermitian one matrix model. We present explicit results up to genus two. We…

High Energy Physics - Theory · Physics 2009-10-22 J. Ambjørn , L. Chekhov , C. F. Kristjansen , Yu. Makeenko

This communication presents an examination of a two-dimensional, non-Hermitian Su -Schrieffer-Heeger (SSH) model, which is differentiated from its conventional Hermitian counterpart by incorporating gain and/or loss terms, mathematically…

Mesoscale and Nanoscale Physics · Physics 2025-06-23 Udai Prakash Tyagi , Partha Goswami

Integrable theory is formulated for correlation functions of characteristic polynomials associated with invariant non-Gaussian ensembles of Hermitean random matrices. By embedding the correlation functions of interest into a more general…

Mathematical Physics · Physics 2010-09-14 Vladimir Al. Osipov , Eugene Kanzieper

Combined perturbation bounds are presented for eigenvalues and eigenspaces of Hermitian matrices or singular values and singular subspaces of general matrices. The bounds are derived based on the smooth decompositions and elementary…

Numerical Analysis · Mathematics 2025-09-16 Xiao Shan Chen , Hongguo Xu

Recent studies of moir\'e physics have unveiled a wealth of opportunities for significantly advancing the field of quantum phase transitions. However, properties of reentrant phase transitions driven by moir\'e strength are poorly…

Quantum Physics · Physics 2026-01-16 Guo-Qing Zhang , L. F. Quezada , Shi-Hai Dong

The permanent-on-top conjecture states that the largest eigenvalue of the Schur power matrix of a positive semi-definite Hermitian matrix H is per(H). A counterexample has been found with the help of computers, but here, I present another…

Combinatorics · Mathematics 2022-08-24 Tran Hoang Anh

We present the general relationship between phase correlations and the hierarchy of polyspectra in the Fourier space, and the new theoretical understanding of the phase information is provided. Phase correlations are related to the…

Astrophysics · Physics 2009-11-07 Takahiko Matsubara

We study the class $\mathcal C$ of symmetric functions whose coefficients in the Schur basis can be described by generating functions for sets of tableaux with fixed shape. Included in this class are the Hall-Littlewood polynomials,…

Combinatorics · Mathematics 2011-06-09 Jason Bandlow , Jennifer Morse

Globally coupled phase oscillator models, such as the Kuramoto model, exhibit spontaneous collective synchronization. Such models can be restated in terms of interactions within and between subsets of oscillators. An approximation for the…

Adaptation and Self-Organizing Systems · Physics 2015-06-17 David Mertens

Motivated by the recent experiments on van der Waals heterostructures involving metallic and Mott insulating layers, we construct a moir\'e extension of the Kondo-Heisenberg model and study its phase diagram via Abrikosov fermion mean field…

Strongly Correlated Electrons · Physics 2024-08-13 Jyotirish Das , Onur Erten

In part I of this contribution we have reported how the Flory-Huggins interaction parameter chi can be modeled as a function of chain length within the composition range of pair interaction between the macromolecules by means of the three…

Soft Condensed Matter · Physics 2007-05-23 Bernhard A. Wolf

We prove refined generating series formulae for characters of (virtual) cohomology representations of external products of suitable coefficients, e.g., (complexes of) constructible or coherent sheaves, or (complexes of) mixed Hodge modules…

Algebraic Geometry · Mathematics 2017-06-27 Laurentiu Maxim , Joerg Schuermann

Random matrix models based on an integral over supermatrices are proposed as a natural extension of bosonic matrix models. The subtle nature of superspace integration allows these models to have very different properties from the analogous…

High Energy Physics - Theory · Physics 2015-06-26 Scott A. Yost

We define Hodge correlators for a compact Kahler manifold X. They are complex numbers which can be obtained by perturbative series expansion of a certain Feynman integral which we assign to X. We show that they define a functorial real…

Algebraic Geometry · Mathematics 2009-08-14 A. B. Goncharov

We investigate a class of models with a massless fermion and a self-interacting scalar field with the Yukawa interaction between these two fields. The models considered are formulated in two and four spacetime dimensions and possess a…

High Energy Physics - Phenomenology · Physics 2014-12-09 V. G. Ksenzov , A. I. Romanov

We study a unitary matrix model of the Gross-Witten-Wadia type, extended with the addition of characteristic polynomial insertions. The model interpolates between solvable unitary matrix models and is the unitary counterpart of a deformed…

High Energy Physics - Theory · Physics 2020-11-23 Jorge G. Russo , Miguel Tierz

Pseudo-Hermitian system is a class of non-Hermitian system with Hamiltonian satisfying the condition $\eta^{-1}H^\dagger\eta=H$. We develop the in-in and Schwinger Keldysh formalism to calculate cosmological correlators for pseudo-Hermitian…

High Energy Physics - Theory · Physics 2024-08-15 Yao Bai , Ting-Long Feng , Suro Kim , Cheng-Yang Lee , Lei-Hua Liu , Wangping Zhao , Siyi Zhou

The Springer modules have a combinatorial property called ``coincidence of dimensions,'' i.e., the Springer modules are naturally decomposed into submodules with common dimensions. Morita and Nakajima proved the property by giving modules…

Combinatorics · Mathematics 2007-05-23 Yasuhide Numata

We propose a formula for the eigenvalue integral of the hermitian one matrix model with infinite well potential in terms of dressed twist fields of the su(2) level one WZW model. The expression holds for arbitrary matrix size n, and…

High Energy Physics - Theory · Physics 2009-11-11 Matthias R. Gaberdiel , Albrecht O. Klemm , Ingo Runkel

Recently the Schur index of ${\cal N}=4$ SYM was evaluated in closed form to all orders including exponential corrections in the large $N$ expansion and for fixed finite $N$. This was achieved by identifying the matrix model which…

High Energy Physics - Theory · Physics 2016-01-27 Nadav Drukker
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