Partial breaking N=4 to N=2: hypermultiplet as a Goldstone superfield

Details Partial breaking N=4 to N=2: hypermultiplet as a Goldstone superfield Partial breaking N=4 to N=2: hypermultiplet as a Goldstone superfield

1998-09-27

arxiv.org/abs/hep-th/9809190v2

Fortsch.Phys.48:19-24,2000

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, LaTeX, Talk given by E. Ivanov at the XI Int. Conference "Problems of Quantum Field Theory" (July 13-17, Dubna, Russ

Scientific paper

We describe the partial breaking of $N=1 D=10$ supersymmetry down to $(1,0) d=6$ supersymmetry within the non-linear realization approach. The basic Goldstone superfield associated with this breaking is shown to be the $(1,0) d=6$ hypermultiplet superfield $q^{ia}$ subjected to a non-linear generalization of the standard hypermultiplet superfield constraint. The dynamical equations implied by this constraint are identified as the manifestly worldvolume supersymmetric equations of the Type I super 5-brane in D=10. We give arguments in favour of existence of an appropriate brane extension of off-shell hypermultiplet actions in harmonic superspace. Some related problems, in particular, the issue of utilizing other $(1,0) d=6$ supermultiplets as Goldstone ones, are shortly discussed.

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