Super Higgs Effect in Extended Supergravity
نویسنده
چکیده
We consider the reduction of supersymmetry in N -extended four dimensional supergravity via the super Higgs mechanism. We provide an analysis largely based on the properties of long and short multiplets of Poincaré supersymmetry. Examples of the super Higgs phenomenon are realized in spontaneously broken N = 8 supergravity through the Scherk-Schwarz mechanism and in superstring compactification in presence of brane fluxes. In many models the massive vectors count the difference in number of the translation isometries of the scalar σ-model geometries in the broken and unbroken phase.
منابع مشابه
On the Super Higgs Effect in Extended Supergravity
We consider the reduction of supersymmetry in N -extended four dimensional supergravity via the super Higgs mechanism in theories without cosmological constant. We provide an analysis largely based on the properties of long and short multiplets of Poincaré supersymmetry. Examples of the super Higgs phenomenon are realized in spontaneously broken N = 8 supergravity through the Scherk-Schwarz mec...
متن کاملGauged N = 2 Supergravity and Partial Breaking of Extended Supersymmetry
We review the general gauged N = 2 supergravity coupled to an arbitrary number of vector multiplets and hypermultiplets. We consider two different models where N = 2 supersymmetry is broken to N = 1 spontaneously, one has a U(1) vector multiplet and the other has a U(N) vector multiplet. In both cases, partial breaking of N = 2 supersymmetry is accomplished by the Higgs and the super-Higgs mech...
متن کاملSupersymmetry Breakdown at Distant Branes: The Super–Higgs Mechanism
A compactification of 11-dimensional supergravity with two (or more) walls is considered. The whole tower of massive Kaluza-Klein modes along the fifth dimension is taken into account. With the sources on the walls, an explicit composition in terms of Kaluza-Klein modes of massless gravitino (in the supersymmetry preserving case) and massive gravitino (in the supersymmetry breaking case) is obt...
متن کاملHiggs and Super-higgs Effects with Naturally Vanishing Vacuum Energy
We construct N = 1 supergravity models where the gauge symmetry and supersymmetry are both spontaneously broken, with naturally vanishing classical vacuum energy and unsuppressed Goldstino components along gauge non-singlet directions. We discuss some physically interesting situations where such a mechanism could play a role, and identify the breaking of a grand-unified gauge group as the most ...
متن کاملSupergravity Breaking in Three Dimensions
We study models of spontaneous N = 2 → N = 1 supergravity breaking in three space-time dimensions and discuss the topological Higgsand super-Higgs mechanism which generates the masses for the spin-3/2 gravitino multiplet. The resulting N = 1 spectrum and its effective action is analysed.
متن کامل