The Coulomb branch of the Leigh-Strassler deformation and matrix models

Abstract

The Dijkgraaf-Vafa approach is used in order to study the Coulomb branch of the Leigh-Strassler massive deformation of N=4 SYM with gauge group U(N). The theory has N=1 SUSY and an N-dimensional Coulomb branch of vacua, which can be described by a family of ``generalized'' Seiberg-Witten curves. The matrix model analysis is performed by adding a tree level potential that selects particular vacua. The family of curves is found: it consists of order N branched coverings of a base torus, and it is described by multi-valued functions on the latter. The relation between the potential and the vacuum is made explicit. The gauge group SU(N) is also considered. Finally the resolvents from which expectation values of chiral operators can be extracted are presented.

arXiv comment19 pages, 2 figures, latex

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• Master Space and Hilbert Series for N=1 Field Theories
• Non-Critical Superstrings from Four-Dimensional Gauge Theory
• Parameter Space of Quiver Gauge Theories
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• Matrix models for topological strings: exact results in the planar limit