Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-01-28
JHEP 0312:027,2003
Physics
High Energy Physics
High Energy Physics - Theory
17 pages LaTeX
Scientific paper
10.1088/1126-6708/2003/12/027
We construct low energy effective Lagrangians for 3d N=4 supersymmetric Yang-Mills theory with any gauge group. They represent supersymmetric sigma models at hyper-Kahlerian manifolds of dimension 4r (r is the rang of the group). In the asymptotic region, perturbatively exact explicit expression for the metric are written. We establish the relationship of this metric with the TAUB-NUT metric describing the perturbatively exact effective Lagrangians for unitary groups and monopole moduli spaces: the former is obtained out of the latter by a proper hyper-Kahlerian reduction. We describe in details the reduction procedure for SO/Sp/G_2 gauge groups, where it can also be given a natural interpretation in D-brane language. We conjecture that the exact nonperturbative metrics can be obtained by a similar hyper-Kahlerian reduction from the corresponding multidimensional Atiyah-Hitchin metrics.
Selivanov K. G.
Smilga Andrei. V.
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