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Search: authors:"Jean-Pierre Derendinger"

4 papers found.
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Nonlinear \( \mathcal{N}=2 \) global supersymmetry

We study the partial breaking of \( \mathcal{N}=2 \) global supersymmetry, using a novel formalism that allows for the off-shell nonlinear realization of the broken supersymmetry, extending previous results scattered in the literature. We focus on the Goldstone degrees of freedom of a massive \( \mathcal{N}=1 \) gravitino multiplet which are described by deformed \( \mathcal{N}=2...

Isometries, gaugings and \( \mathcal{N} \) = 2 supergravity decoupling

We study off-shell rigid limits for the kinetic and scalar-potential terms of a single \( \mathcal{N} \) = 2 hypermultiplet. In the kinetic term, these rigid limits establish relations between four-dimensional quaternion-Kähler and hyper-Kähler target spaces with symmetry. The scalar potential is obtained by gauging the graviphoton along an isometry of the quaternion-Kähler space...

A second look at gauged supergravities from fluxes in M-theory

Jean-Pierre Derendinger 0 Adolfo Guarino 0 0 Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, Bern University , Sidlerstrae 5, CH-3012 Bern, Switzerland We

The hypermultiplet with Heisenberg isometry in N = 2 global and local supersymmetry

The string coupling of N = 2 supersymmetric compactifications of type II string theory on a Calabi-Yau manifold belongs to the so-called universal dilaton hyper-multiplet, that has four real scalars living on a quaternion-Kähler manifold. Requiring Heisenberg symmetry, which is a maximal subgroup of perturbative isometries, reduces the possible manifolds to a one-parameter family...