N=2 supersymmetric Yang-Mills theories and Whitham integrable hierarchies

Details N=2 supersymmetric Yang-Mills theories and Whitham integrable hierarchies N=2 supersymmetric Yang-Mills theories and Whitham integrable hierarchies

1999-02-23

arxiv.org/abs/hep-th/9902161v1

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, LaTeX, no figures; Invited talk at the Second Meeting "Trends in Theoretical Physics", held in Buenos Aires, Decembe

Scientific paper

10.1063/1.59658

We review recent work on the study of N=2 super Yang-Mills theory with gauge group SU(N) from the point of view of the Whitham hierarchy, mainly focusing on three main results: (i) We develop a new recursive method to compute the whole instanton expansion of the low-energy effective prepotential; (ii) We interpret the slow times of the hierarchy as additional couplings and promote them to spurion superfields that softly break N=2 supersymmetry down to N=0 through deformations associated to higher Casimir operators of the gauge group; (iii) We show that the Seiberg-Witten-Whitham equations provide a set of non-trivial constraints on the form of the strong coupling expansion in the vicinity of the maximal singularities. We use them to check a proposal that we make for the value of the off-diagonal couplings at those points of the moduli space.

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