New supersymmetric sigma-model duality

Details New supersymmetric sigma-model duality New supersymmetric sigma-model duality

2010-06-11

arxiv.org/abs/1006.2299v3

JHEP 1010:072,2010

Physics

High Energy Physics

High Energy Physics - Theory

41 pages; V2: a reference added; V3: published version

Scientific paper

10.1007/JHEP10(2010)072

We study dualities in off-shell 4D N = 2 supersymmetric sigma-models, using the projective superspace approach. These include (i) duality between the real O(2n) and polar multiplets; and (ii) polar-polar duality. We demonstrate that the dual of any superconformal sigma-model is superconformal. Since N = 2 superconformal sigma-models (for which target spaces are hyperkahler cones) formulated in terms of polar multiplets are naturally associated with Kahler cones (which are target spaces for N = 1 superconformal sigma-models), polar-polar duality generates a transformation between different Kahler cones. In the non-superconformal case, we study implications of polar-polar duality for the sigma-model formulation in terms of N = 1 chiral superfields. In particular, we find the relation between the original hyperkahler potential and its dual. As an application of polar-polar duality, we study self-dual models.

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