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New supersymmetric higher-derivative couplings: Full N=2 superspace does not count!

Research paper by Bernard de Wit, Stefanos Katmadas, Maaike van Zalk

Indexed on: 29 Mar '11Published on: 29 Mar '11Published in: High Energy Physics - Theory



Abstract

An extended class of N=2 locally supersymmetric invariants with higher-derivative couplings based on full superspace integrals, is constructed. These invariants may depend on unrestricted chiral supermultiplets, on vector supermultiplets and on the Weyl supermultiplet. Supersymmetry is realized off-shell. A non-renormalization theorem is proven according to which none of these invariants can contribute to the entropy and electric charges of BPS black holes. Some of these invariants may be relevant for topological string deformations.