4D N=2 supergravity and projective superspace
2008 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, no 9, 051- p.Article in journal (Refereed) Published
This paper presents a projective superspace formulation for 4D N = 2 matter-coupled supergravity. We first describe a variant superspace realization for the N = 2 Weyl multiplet. It differs from that proposed by Howe in 1982 by the choice of the structure group SO(3, 1) x SU(2) versus SO(3, 1) x U( 2)), which implies that the super-Weyl transformations are generated by a covariantly chiral parameter instead of a real unconstrained one. We introduce various off-shell supermultiplets which are curved superspace analogues of the superconformal projective multiplets in global supersymmetry and which describe matter fields coupled to supergravity. A manifestly locally supersymmetric and super-Weyl invariant action principle is given. Off-shell locally supersymmetric nonlinear sigma models are presented in this new superspace.
Place, publisher, year, edition, pages
2008. no 9, 051- p.
extended supersymmetry, superspaces, supergravity models
IdentifiersURN: urn:nbn:se:uu:diva-107858DOI: 10.1088/1126-6708/2008/09/051ISI: 000259699700086OAI: oai:DiVA.org:uu-107858DiVA: diva2:233343