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We study Nekrasov's deformed partition function of 5-dimensional supersymmetric Yang-Mills theory compactified on a circle. Mathematically it is the generating function of the characters of the coordinate rings of the moduli spaces of…

Algebraic Geometry · Mathematics 2007-05-23 Hiraku Nakajima , Kota Yoshioka

We argue the connection of Nekrasov's partition function in the \Omega background and the moduli space of D-branes, suggested by the idea of geometric engineering and Gopakumar-Vafa invariants. In the instanton expansion of N=2 SU(2)…

High Energy Physics - Theory · Physics 2009-11-11 Hidetoshi Awata , Hiroaki Kanno

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

We study the stringy instanton partition function of four dimensional ${\cal N}=2$ $U(N)$ supersymmetric gauge theory which was obtained by Bonelli et al in 2013. In type IIB string theory on $\mathbb{C}^2\times T^*\mathbb{P}^1\times…

High Energy Physics - Theory · Physics 2015-07-21 Masahide Manabe

We consider a topological quiver matrix model which is expected to give a dual description of the instanton dynamics of topological U(N) gauge theory on D6 branes. The model is a higher dimensional analogue of the ADHM matrix model that…

High Energy Physics - Theory · Physics 2014-11-18 Hidetoshi Awata , Hiroaki Kanno

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 examine the problem of counting bound states of BPS black holes on local Calabi-Yau threefolds which are fibrations over a Riemann surface by computing the partition function of q-deformed Yang-Mills theory on the Riemann surface. We…

High Energy Physics - Theory · Physics 2009-11-11 Nicola Caporaso , Michele Cirafici , Luca Griguolo , Sara Pasquetti , Domenico Seminara , Richard J. Szabo

The instanton partition function of N=2, D=4 SU(2) gauge theory is obtained by taking the field theory limit of the topological open string partition function, given by a Chern-Simons theory, of a CY3-fold. The CY3-fold on the open string…

High Energy Physics - Theory · Physics 2007-05-23 Amer Iqbal , Amir-Kian Kashani-Poor

The $R^2 F^{2g-2}$ terms of Type IIA strings on Calabi-Yau 3-folds, which are given by the corresponding topological string amplitudes (a worldsheet instanton sum for all genera), are shown to have a simple M-theory interpretation. In…

High Energy Physics - Theory · Physics 2007-05-23 Rajesh Gopakumar , Cumrun Vafa

We construct a matrix model that reproduces the topological string partition function on arbitrary toric Calabi-Yau 3-folds. This demonstrates, in accord with the BKMP "remodeling the B-model" conjecture, that Gromov-Witten invariants of…

High Energy Physics - Theory · Physics 2010-03-19 Bertrand Eynard , Amir-Kian Kashani-Poor , Olivier Marchal

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

We give a mathematically rigorous proof of Nekrasov's conjecture: the integration in the equivariant cohomology over the moduli spaces of instantons on $\mathbb R^4$ gives a deformation of the Seiberg-Witten prepotential for N=2 SUSY…

Algebraic Geometry · Mathematics 2015-06-26 Hiraku Nakajima , Kota Yoshioka

It was known that the ABJM matrix model is dual to the topological string theory on a Calabi-Yau manifold. Using this relation it was possible to write down the exact instanton expansion of the partition function of the ABJM matrix model.…

High Energy Physics - Theory · Physics 2015-06-11 Sanefumi Moriyama , Tomoki Nosaka

We examine the two-dimensional U(N) Yang-Mills theory by using the technique of random partitions. We show that the large N limit of the partition function of the 2D Yang-Mills theory on S^2 reproduces the instanton counting of 4D N=2…

High Energy Physics - Theory · Physics 2008-11-26 Toshihiro Matsuo , So Matsuura , Kazutoshi Ohta

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

We show that a partition function of topological twisted N=4 Yang-Mills theory is given by Seiberg-Witten invariants on a Riemannian four manifolds under the condition that the sum of Euler number and signature of the four manifolds vanish.…

High Energy Physics - Theory · Physics 2019-08-17 Akifumi Sako , Toru Sasaki

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 study a system of fractional D3 and D(-1) branes in a Ramond-Ramond closed string background and show that it describes the gauge instantons of N=2 super Yang-Mills theory and their interactions with the graviphoton of N=2 supergravity.…

High Energy Physics - Theory · Physics 2009-11-11 Marco Billo , Marialuisa Frau , Francesco Fucito , Alberto Lerda

In a previous paper, we presented a matrix model reproducing the topological string partition function on an arbitrary given toric Calabi-Yau manifold. Here, we study the spectral curve of our matrix model and thus derive, upon imposing…

High Energy Physics - Theory · Physics 2015-05-19 Bertrand Eynard , Amir-Kian Kashani-Poor , Olivier Marchal

Topological string theory has multi-instanton sectors which lead to non-perturbative effects in the string coupling constant and control the large order behavior of the perturbative genus expansion. As proposed by Couso, Edelstein, Schiappa…

High Energy Physics - Theory · Physics 2023-11-01 Jie Gu , Marcos Marino
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