Results 41 to 50 of about 20,804,533 (246)
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 the Starobinsky model of inflation from supergravity [PDF]
Nuclear Physics B, 2013 We discuss how the higher-derivative Starobinsky model of inflation originates from N=1 supergravity. It is known that, in the old-minimal supergravity description written by employing a chiral compensator in the superconformal framework, the Starobinsky model is equivalent to a no-scale model with F-term potential.
F. Farakos, A. Kehagias, A. Riotto
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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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On the gauged Kähler isometry in minimal supergravity models of inflation [PDF]
, 2014 In this paper we address the question how to discriminate whether the gauged isometry group 𝒢Σ of the Kähler manifold Σ that produces a D‐type inflaton potential in a Minimal Supergravity Model is elliptic, hyperbolic or parabolic.
S. Ferrara, P. Fré, A. Sorin
semanticscholar +1 more source
Poisson–Lie transformations and generalized supergravity equations
European Physical Journal C: Particles and Fields, 2021 In this paper we investigate Poisson–Lie transformation of dilaton and vector field $${\mathcal {J}}$$ J appearing in generalized supergravity equations. While the formulas appearing in literature work well for isometric sigma models, we present examples
Ladislav Hlavatý, Ivo Petr
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New class of N=1 no-scale supergravity models. [PDF]
Physical Review Letters, 2013 We introduce a new N=1 no-scale supergravity model with F- and D-term breaking. It contains a single chiral supermultiplet T and a single U(1) vector multiplet U, gauging a nonanomalous axionic shift symmetry.
G. Dall’Agata, F. Zwirner
semanticscholar +1 more source
Higher Order Corrections in Minimal Supergravity Models of Inflation [PDF]
, 2013 We study higher order corrections in new minimal supergravity models of a single scalar field inflation. The gauging in these models leads to a massive vector multiplet and the D-term potential for the inflaton field with a coupling g2 ~ 10−10. In the de-
S. Ferrara +3 more
semanticscholar +1 more source
Gravitino properties in a conformal supergravity model [PDF]
Physical Review D, 2013 In the context of a conformal Supergravity (SUGRA) model in the Einstein frame, in which the (next to) minimal supersymmetric standard model can embedded naturally to produce chaotic inflation scenarios, we study properties of gravitino in the cases where it is stable or unstable.
Vassilis C. Spanos +2 more
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Primordial black holes as dark matter in supergravity inflation models [PDF]
, 2016 We propose a novel scenario to produce abundant primordial black holes (PBHs) in new inflation which is a second phase of a double inflation in the supergravity framework.
Masahiro Kawasaki +3 more
semanticscholar +1 more source
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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