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The circular $\beta$ ensemble for $\beta =1,2$ and 4 corresponds to circular orthogonal, unitary and symplectic ensemble respectively as introduced by Dyson. The statistical state of the eigenvalues is then a determinantal point process…

Mathematical Physics · Physics 2025-09-08 Peter J. Forrester , Bo-Jian Shen

Matrix models of 2d quantum gravity coupled to matter field are investigated by the renormalized perturbational method, in which the matrix model Hamiltonian is represented by the equivalent vector model. By the saddle point method, the…

High Energy Physics - Theory · Physics 2009-10-28 Shinobu Hikami

Matrix models of 2d quantum gravity coupled to matter field are investigated by the renormalized perturbational method, in which the matrix model Hamiltonian is represented by the equivalent vector model. By the saddle point method, the…

Condensed Matter · Physics 2007-05-23 Shinobu Hikami

We study the scaling dimension $\Delta_{\phi^n}$ of the operator $\phi^n$ where $\phi$ is the fundamental complex field of the $U(1)$ model at the Wilson-Fisher fixed point in $d=4-\varepsilon$. Even for a perturbatively small fixed point…

High Energy Physics - Theory · Physics 2020-06-05 Gil Badel , Gabriel Cuomo , Alexander Monin , Riccardo Rattazzi

We study the semiclassical Wigner-Kirkwood (WK) expansion of the partition function $Z(t)$ for arbitrary even homogeneous potentials, starting from the Bloch equation. As is well known, the phase-space kernel of $Z$ satisfies the so-called…

Quantum Physics · Physics 2009-11-13 S. G. Matinyan , B. Müller

We found that when the spinless model is off the half-filling regime ($\mu \neq V$), the Helmholtz free energy (HFE) can be written as two $\beta$-expansions: one expansion comes from the half-filling configuration and another one that…

Strongly Correlated Electrons · Physics 2015-10-23 E. V. Corrêa Silva , M. T. Thomaz , O. Rojas

We analyze $(2+1)$-dimensional vector-vector type four-Fermi interaction (Thirring) model in the framework of the $1/N$ expansion. By solving the Dyson-Schwinger equation in the large-$N$ limit, we show that in the two-component formalism…

High Energy Physics - Theory · Physics 2009-10-22 D. K. Hong , S. H. Park

The Mayer cluster expansion technique is applied to the Nekrasov instanton partition function of $\mathcal{N}=2$ $SU(N_c)$ super Yang-Mills. The subleading small $\epsilon_2$-correction to the Nekrasov-Shatashvili limiting value of the…

High Energy Physics - Theory · Physics 2016-05-04 Jean-Emile Bourgine , Davide Fioravanti

In this paper, a new expression for the partition function of the generalized Penner model given by Goulden, Harer and Jackson is derived. The Penner and the orthogonal Penner partition functions are special cases of this formula. The…

High Energy Physics - Theory · Physics 2015-06-18 Noureddine Chair

We consider a one-dimensional Osp($N|2M$) pseudoparticle mechanical model which may be written as a phase space gauge theory. We show how the pseudoparticle model naturally encodes and explains the two-dimensional zero curvature approach to…

High Energy Physics - Theory · Physics 2009-10-22 Karyn M. Apfeldorf , Joaquim Gomis

We study the multiplicity of irreducible representations in the decomposition of $n$ fundamentals of $SU(N)$ weighted by a power of their dimension in the large $n$ and large $N$ double scaling limit. A nontrivial scaling is obtained by…

High Energy Physics - Theory · Physics 2025-06-26 Alexios P. Polychronakos , Konstantinos Sfetsos

We consider $U(N)$ SQCD on $S^5$ and propose a Higgs branch-like expression for its partition function. We support the result by arguing that the knowledge of certain BPS codimension 2 and 4 defects arising from Higgsing is enough to…

High Energy Physics - Theory · Physics 2018-11-08 Fabrizio Nieri , Yiwen Pan , Maxim Zabzine

We analyze the geometric engineering of the N=2 SU(2) gauge theories with $1\leq N_f\leq 3$ massive hypermultiplets in the vector representation. The set of partial differential equations satisfied by the periods of the Seiberg-Witten…

High Energy Physics - Theory · Physics 2010-04-05 Yukiko Konishi , Michihiro Naka

Motivated by the BPS/CFT correspondence, we explore the similarities between the classical $\beta$-deformed Hermitean matrix model and the $q$-deformed matrix models associated to 3d $\mathcal{N}=2$ supersymmetric gauge theories on…

High Energy Physics - Theory · Physics 2020-12-02 Luca Cassia , Rebecca Lodin , Maxim Zabzine

Six-loop massive scheme renormalization group functions of a d=3-dimensional cubic model (J.M. Carmona, A. Pelissetto, and E. Vicari, Phys. Rev. B vol. 61, 15136 (2000)) are reconsidered by means of the pseudo-epsilon expansion. The…

Statistical Mechanics · Physics 2016-08-31 R. Folk , Yu. Holovatch , T. Yavors'kii

In this paper, we study 5d $\mathcal{N}=1$ $Sp(N)$ gauge theory with $N_f ( \leq 2N + 3 )$ flavors based on 5-brane web diagram with $O5$-plane. On the one hand, we discuss Seiberg-Witten curve based on the dual graph of the 5-brane web…

High Energy Physics - Theory · Physics 2021-06-16 Xiaobin Li , Futoshi Yagi

We study wo distinct theta-exact Seiberg-Witten (SW) map expansions, (I) and (II) respectively, up to the e3 order for the gauge parameter, gauge field and the gauge field strengths of the noncommutative U*(1) gauge theory on the Moyal…

High Energy Physics - Theory · Physics 2015-06-03 Josip Trampetic , Jiangyang You

We show how certain non-perturbative superpotentials W, which are the two-dimensional analogs of the Seiberg-Witten prepotential in 4d, can be computed via geometric engineering from 4-folds. We analyze an explicit example for which the…

High Energy Physics - Theory · Physics 2009-10-30 Wolfgang Lerche

We compute the Nekrasov partition function of gauge theories on the (resolved) toric singularities C^2/\Gamma in terms of blow-up formulae. We discuss the expansion of the partition function in the \epsilon_1,\epsilon_2 \to 0 limit along…

High Energy Physics - Theory · Physics 2015-06-11 Giulio Bonelli , Kazunobu Maruyoshi , Alessandro Tanzini , Futoshi Yagi

We use the holomorphic anomaly equation to solve the gravitational corrections to Seiberg-Witten theory and a two-cut matrix model, which is related by the Dijkgraaf-Vafa conjecture to the topological B-model on a local Calabi-Yau manifold.…

High Energy Physics - Theory · Physics 2008-11-26 Min-xin Huang , Albrecht Klemm
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