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New duality-invariant models for nonlinear supersymmetric electrodynamics
Journal of High Energy Physics, 2023 We propose a new family of U(1) duality-invariant models for nonlinear N $$ \mathcal{N} $$ = 1 supersymmetric electrodynamics coupled to supergravity.
Sergei M. Kuzenko, Jake C. Stirling
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On Nonstandard Vacuua in Minimal Supergravity Models [PDF]
Journal of High Energy Physics, 2003 The plethora of scalar fields participating in the formulation of a softly broken supersymmetric theory can threat the stability of the standard vacuum. The generic situation is twofold. Directions in scalar field space may exist along which the potential becomes unbounded from below or local minima deeper than the standard one are likely to appear ...
Gioutsos, D. V., Vayonakis, C. E.
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Journal of High Energy Physics, 2020 For the first time in the physics literature, the Lorentz representations of all 2,147,483,648 bosonic degrees of freedom and 2,147,483,648 fermionic degrees of freedom in an unconstrained eleven dimensional scalar superfield are presented.
S. James Gates +2 more
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Constraints on supergravity chaotic inflationary models [PDF]
Physics Letters B, 1996 Latex file, 10 pages; important changes and references ...
Bento, M. C., Bertolami, O.
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Fine-tuning constraints on supergravity models [PDF]
Physics Letters B, 2000 We discuss fine-tuning constraints on supergravity models. The tightest constraints come from the experimental mass limits on two key particles: the lightest CP even Higgs boson and the gluino. We also include the lightest chargino which is relevant when universal gaugino masses are assumed. For each of these particles we show how fine-tuning increases
Bastero-Gil, M. +2 more
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Non-relativistic three-dimensional supergravity theories and semigroup expansion method
Journal of High Energy Physics, 2021 In this work we present an alternative method to construct diverse non-relativistic Chern-Simons supergravity theories in three spacetime dimensions. To this end, we apply the Lie algebra expansion method based on semigroups to a supersymmetric extension
Patrick Concha +3 more
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On destabilizing divergences in supergravity models [PDF]
Physics Letters B, 1995 We show that, for standard N=1 supergravity coupled to chiral matter, if the Kahler potential has no terms linear in chiral superfields then none are generated through quad. div. one--loop corrections. If however =0 and susy is spontaneously broken, linear terms are present and new linear terms may be generated due to nonrenormalizable couplings in K ...
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Updated constraints on the minimal supergravity model [PDF]
Journal of High Energy Physics, 2006 We provide an up-to-date analysis of the parameter space of the minimal supergravity model (mSUGRA). Novel features include the new central value of the top quark mass, an improved calculation of the masses of the supersymmetric particles and the neutral Higgs bosons, constraints from b to s \ell^+ \ell^- decays, and a careful treatment of the most ...
Djouadi, Abdelhak +2 more
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Gauged supergravity from dimensional reduction [PDF]
, 1997 We perform a generalised Scherk-Schwarz reduction of the effective action of the heterotic string on T6 to obtain a massive N = 4 supergravity theory in four dimensions.
Eyras, E., +6 more
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The inflatino problem in supergravity inflationary models [PDF]
Physics Letters B, 2001 We consider the potential problems due to the production of inflatinos and gravitinos after inflation. Inflationary models with a single scale set by the microwave background anisotropies have a low enough reheat temperature to avoid problems with the thermal production of gravitinos.
Nilles H. P., Olive K. A., Peloso M.
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