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Related papers: Instanton counting on blowup. II. $K$-theoretic pa…

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We consider the effective topological field theory on Euclidean D-strings wrapping on a 2-cycle in the internal space. We evaluate the vev of a suitable operator corresponding to the chemical potential of vortices bounded to the D-strings,…

High Energy Physics - Theory · Physics 2009-11-11 So Matsuura , Kazutoshi Ohta

We derive the partition function of N=4 supersymmetric Yang-Mills theory on orbifold-$T^4/{\bf Z}_2$. In classical geometry, K3 surface is constructed from the orbifold-$T^4/{\bf Z}_2$. Along the same way as the orbifold construction, we…

High Energy Physics - Theory · Physics 2009-10-31 Masao Jinzenji , Toru Sasaki

This is the 13th article in the collection of reviews "Exact results in N=2 supersymmetric gauge theories", ed. J. Teschner. It discusses the relation between the instanton partition functions and the partition function of the topological…

High Energy Physics - Theory · Physics 2014-12-23 Daniel Krefl , Johannes Walcher

We construct an Imbimbo-Mukhi type matrix model, which reproduces exactly the partition function of ${\mathbb{CP}^1}$ topological strings in the small phase space, Nekrasov's instanton counting in ${\cal{N}}=2$ gauge theory and the large…

High Energy Physics - Theory · Physics 2008-11-26 Ta-Sheng Tai

Five-dimensional $\mathcal{N}=1$ supersymmetric Yang-Mills theories are investigated from the viewpoint of random plane partitions. It is shown that random plane partitions are factorizable as q-deformed random partitions so that they admit…

High Energy Physics - Theory · Physics 2009-11-10 Takashi Maeda , Toshio Nakatsu , Kanehisa Takasaki , Takeshi Tamakoshi

In this work we conjecture the Coulomb branch partition function, including flux and instanton contributions, for the $\mathcal{N}=2$ vector multiplet on weighted projective space $\mathbb{CP}^2_{\boldsymbol{N}}$ for equivariant…

High Energy Physics - Theory · Physics 2025-04-28 Roman Mauch , Lorenzo Ruggeri

We construct ${\cal N}=2$ supersymmetric Yang-Mills theory on 4D manifolds with a Killing vector field with isolated fixed points. It turns out that for every fixed point one can allocate either instanton or anti-instanton contributions to…

High Energy Physics - Theory · Physics 2020-06-09 Guido Festuccia , Jian Qiu , Jacob Winding , Maxim Zabzine

We prove that the K-theoretic Nekrasov instanton partition functions have a positive radius of convergence in the instanton counting parameter and are holomorphic functions of the Coulomb parameters in a suitable domain. We discuss the…

Mathematical Physics · Physics 2018-11-14 Giovanni Felder , Martin Müller-Lennert

Instanton calculations are demonstrated from a viewpoint of twisted topological field theory. Various properties become manifest such that perturbative corrections are terminated at one-loop, and norm cancellations occur between bosonic and…

High Energy Physics - Theory · Physics 2007-05-23 Yuhsuke Yoshida

Various branches of matrix model partition function can be represented as intertwined products of universal elementary constituents: Gaussian partition functions Z_G and Kontsevich tau-functions Z_K. In physical terms, this decomposition is…

High Energy Physics - Theory · Physics 2009-05-01 A. Alexandrov , A. Mironov , A. Morozov

In this paper, we review the construction and large $N$ study of the continuous two-dimensional Yang--Mills theory with gauge group $\mathrm{U}(N)$ through probability, combinatorics and representation theory. In the first part, we define…

Combinatorics · Mathematics 2026-02-10 Thibaut Lemoine

We introduce the shell formula-a framework that unifies the description of partition functions whose pole structures are classified by Young diagrams of arbitrary dimension. The formalism yields explicit closed-form expressions and…

High Energy Physics - Theory · Physics 2026-05-08 Jiaqun Jiang

The Nekrasov conjecture predicts a relation between the partition function for N=2 supersymmetric Yang-Mills theory and the Seiberg-Witten prepotential. For instantons on R^4, the conjecture was proved, independently and using different…

Algebraic Geometry · Mathematics 2009-12-08 Elizabeth Gasparim , Chiu-Chu Melissa Liu

In this work we study the Nekrasov-Shatashvili limit of the Nekrasov instanton partition function of Yang-Mills field theories with N=2 supersymmetry and gauge group SU(n). The theories are coupled with fundamental matter. The equation that…

High Energy Physics - Theory · Physics 2015-06-04 Franco Ferrari , Marcin Piatek

We study the instanton counting in four dimensional $\mathcal{N}=2$ supersymmetric gauge theories on the blow-up of $\mathbb{C}^2$: we start by formulating the instanton moduli space as a quiver variety, which we regularise by introducing…

High Energy Physics - Theory · Physics 2026-04-23 Baptiste Filoche , Stefan Hohenegger , Taro Kimura

We perform an exact computation of the gauged linear sigma model associated to a D1-D5 brane system on a resolved A_1 singularity. This is accomplished via supersymmetric localization on the blown-up two-sphere. We show that in the…

High Energy Physics - Theory · Physics 2015-06-16 Giulio Bonelli , Antonio Sciarappa , Alessandro Tanzini , Petr Vasko

We derive the first $\epsilon_2$-correction to the instanton partition functions of $\mathcal{N}=2$ Super Yang-Mills (SYM) in four dimensions in the Nekrasov-Shatashvili limit $\epsilon_2\rightarrow 0$. In the latter we recall the emergence…

High Energy Physics - Theory · Physics 2015-09-09 Jean-Emile Bourgine , Davide Fioravanti

We survey recent results on quantum corrections to the hypermultiplet moduli space M in type IIA/B string theory on a compact Calabi-Yau threefold X, or, equivalently, the vector multiplet moduli space in type IIB/A on X x S^1. Our main…

High Energy Physics - Theory · Physics 2015-05-27 Daniel Persson

The partition function of Euclidean Yang-Mills theory on two dimensional surfaces is given by the Migdal formula. It involves the area and topological characteristics of the surface. We consider this theory on a class of infinite genus…

High Energy Physics - Theory · Physics 2014-11-20 Dushyant Kumar

We show that noncommutative gauge theory in two dimensions is an exactly solvable model. A cohomological formulation of gauge theory defined on the noncommutative torus is used to show that its quantum partition function can be written as a…

High Energy Physics - Theory · Physics 2009-11-07 L. D. Paniak , R. J. Szabo