Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-11-10
Nucl.Phys. B715 (2005) 234-274
Physics
High Energy Physics
High Energy Physics - Theory
47 pages, LaTeX, v2: several extensions of results, typos corrected, reference added
Scientific paper
10.1016/j.nuclphysb.2005.03.012
We study exact effective superpotentials of four-dimensional {\cal N} = 2 supersymmetric gauge theories with gauge group U(N) and various amounts of fundamental matter on R^3 x S^1, broken to {\cal N} = 1 by turning on a classical superpotential for the adjoint scalar. On general grounds these superpotentials can easily be constructed once we identify a suitable set of coordinates on the moduli space of the gauge theory. These coordinates have been conjectured to be the phase space variables of the classical integrable system which underlies the {\cal N} = 2 gauge theory. For the gauge theory under study these integrable systems are degenerations of the classical, inhomogeneous, periodic SL(2,C) spin chain. Ambiguities in the degeneration provide multiple coordinate patches on the gauge theory moduli space. By studying the vacua of the superpotentials in several examples we find that the spin chain provides coordinate patches that parametrize holomorphically the part of the gauge theory moduli space which is connected to the electric (as opposed to magnetic or baryonic) Higgs and Coulomb branch vacua. The baryonic branch root is on the edge of some coordinate patches. As a product of our analysis all maximally confining (non-baryonic) Seiberg-Witten curve factorizations for N_f \leq N_c are obtained, explicit up to one constraint for equal mass flavors and up to two constraints for unequal mass flavors. Gauge theory addition and multiplication maps are shown to have a natural counterpart in this construction. Furthermore it is shown how to integrate in the meson fields in this formulation in order to obtain three and four dimensional Affleck-Dine-Seiberg-like superpotentials.
Boels Rutger
Boer Jan de
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