Partial breaking N=4 to N=2: hypermultiplet as a Goldstone superfield
arXiv:hep-th/9809190 · doi:10.1002/(SICI)1521-3978(20001)48:1/3<19::AID-PROP19>3.0.CO;2-U
Abstract
We describe the partial breaking of supersymmetry down to supersymmetry within the non-linear realization approach. The basic Goldstone superfield associated with this breaking is shown to be the hypermultiplet superfield 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 supermultiplets as Goldstone ones, are shortly discussed.
17 pages, LaTeX, Talk given by E. Ivanov at the XI Int. Conference "Problems of Quantum Field Theory" (July 13-17, Dubna, Russia) and 32nd Int. Symposium Ahrenshoop on the Theory of Elementary Particles (September 1-5, Buckow, Germany), some misprints removed, a reference added, ref. [25] corrected
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