Results 41 to 50 of about 20,674,433 (271)
Cosmological attractor models and higher curvature supergravity [PDF]
Journal of High Energy Physics, 2014 A bstractWe study cosmological α-attractors in superconformal/supergravity models, where α is related to the geometry of the moduli space. For α = 1 attractors [1] we present a generalization of the previously known manifestly superconformal higher ...
S. Cecotti, R. Kallosh
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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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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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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 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
On Asymmetric Orbifolds and the D=5 No-modulus Supergravity [PDF]
, 2001 We examine whether any type II asymmetric orbifolds have the same massless spectrum as the dimensional reduction of D=5 simple supergravity, which, besides the eleven-dimensional supergravity, is the only known supergravity above four dimensions with no ...
Bouwknegt +25 more
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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
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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Supergravity backgrounds for deformations of
, 2014 Oleg Lunin, Radu Roiban, A.A. Tseytlin
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