N=2 four-dimensional gauge theories from fractional branes

Details N=2 four-dimensional gauge theories from fractional branes N=2 four-dimensional gauge theories from fractional branes

2001-12-20

arxiv.org/abs/hep-th/0112195v1

In Olshanetsky, M. (ed.) et al.: "Multiple facets of quantization and supersymmetry" 730-773, 2002 .

Physics

High Energy Physics

High Energy Physics - Theory

44 pages, AMS-LaTeX, no figures

Scientific paper

This is a pedagogical and extended version of the results published in Refs. [1,2] and presented by the authors in various talks during the last year. We discuss the type II D-branes (both regular and fractional) of the orbifold R^{1,5}*R^4/Z_2, we determine their corresponding supergravity solution and show how this can be used to study the properties of N=2 super Yang-Mills. Supergravity is able to reproduce the perturbative moduli space of the gauge theory, while it does not encode the non-perturbative corrections. The short distance region of space-time, which corresponds to the infrared region of the gauge theory, is excised by an enhancon mechanism, and more states should be included in the low energy effective action in order to enter inside the enhancon and recover the instanton corrections. (To be published on a Memorial Volume commemorating Michael Marinov)

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