Matrix Models, Geometric Engineering and Elliptic Genera

Details Matrix Models, Geometric Engineering and Elliptic Genera Matrix Models, Geometric Engineering and Elliptic Genera

2003-10-29

arxiv.org/abs/hep-th/0310272v4

JHEP 0803:069,2008

Physics

High Energy Physics

High Energy Physics - Theory

90 pages, Latex

Scientific paper

10.1088/1126-6708/2008/03/069

We compute the prepotential of N=2 supersymmetric gauge theories in four dimensions obtained by toroidal compactifications of gauge theories from 6 dimensions, as a function of Kahler and complex moduli of T^2. We use three different methods to obtain this: matrix models, geometric engineering and instanton calculus. Matrix model approach involves summing up planar diagrams of an associated gauge theory on T^2. Geometric engineering involves considering F-theory on elliptic threefolds, and using topological vertex to sum up worldsheet instantons. Instanton calculus involves computation of elliptic genera of instanton moduli spaces on R^4. We study the compactifications of N=2* theory in detail and establish equivalence of all these three approaches in this case. As a byproduct we geometrically engineer theories with massive adjoint fields. As one application, we show that the moduli space of mass deformed M5-branes wrapped on T^2 combines the Kahler and complex moduli of T^2 and the mass parameter into the period matrix of a genus 2 curve.

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