Stringy Instantons in SU(N) N=2 Non-Conformal Gauge Theories

Details Stringy Instantons in SU(N) N=2 Non-Conformal Gauge Theories Stringy Instantons in SU(N) N=2 Non-Conformal Gauge Theories

2011-11-03

arxiv.org/abs/1111.0842v1

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, 1 figure

Scientific paper

In this paper we explicitly obtain the leading corrections to the SU(N) N=2 prepotential due to stringy instantons both in flat space-time and in the presence of a non-trivial graviphoton background field. We show that the stringy corrections to the prepotential are expressible in terms of the elementary symmetric polynomials. For N>2 the theory is not conformal; we discuss the introduction of an explicit dependence on the string scale \alpha' in the low-energy effective action through the stringy non-perturbative sector.

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