On non-linear superfield versions of the vector-tensor multiplet

Details On non-linear superfield versions of the vector-tensor multiplet On non-linear superfield versions of the vector-tensor multiplet

1997-11-06

arxiv.org/abs/hep-th/9711038v2

Phys.Lett. B429 (1998) 35-47

Physics

High Energy Physics

High Energy Physics - Theory

17 pp., Latex, substantial revision of Sect. 5, Abstract slightly modified

Scientific paper

10.1016/S0370-2693(98)00275-5

We propose a harmonic superspace description of the non-linear vector-tensor N=2 multiplet. We show that there exist two inequivalent version: the old one in which one of the vectors is the field-strength of a gauge two-form, and a new one in which this vector satisfies a non-linear constraint and cannot be expressed in terms of a potential. In this the new version resembles the non-linear N=2 multiplet. We perform the dualization of both non-linear versions and discuss the resulting K\"ahler potentials. Finally, we couple the non-linear vector-tensor multiplet to an abelian background gauge multiplet.

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