Inflation in no-scale supergravity

Abstract

$R+R^2$ Supergravity is known to be equivalent to standard Supergravity coupled to two chiral supermultiples with a no-scale Kähler potential. Within this framework, that can accomodate vanishing vacuum energy and spontaneous supersymmetry breaking, we consider modifications of the associated superpotential and study the resulting models, which, viewed as generalizations of the Starobinsky model, for a range of the superpotential parameters, describe viable single-field slow-roll inflation. In all models studied in this work the tensor to scalar ratio is found to be small, well below the upper bound established by the very recent PLANCK and BICEP2 data.

15 pages, 6 figures, references and comments added

References in corpus (16)

• BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
• Planck 2013 results. XXII. Constraints on inflation
• A Joint Analysis of BICEP2/Keck Array and Planck Data
• A universal attractor for inflation at strong coupling
• Starobinsky-like Inflationary Models as Avatars of No-Scale Supergravity
• No-Scale Supergravity Realization of the Starobinsky Model of Inflation
• The Minimal Volkov - Akulov - Starobinsky Supergravity
• On sgoldstino-less supergravity models of inflation
• Inflation and Uplifting with Nilpotent Superfields
• On the Supersymmetric Completion of $R+R^2$ Gravity and Cosmology
• A No-Scale Framework for Sub-Planckian Physics
• ${\mathcal{R}}^2$ inflation from scale invariant supergravity and anomaly free superstrings with fluxes
• Resurrecting Quadratic Inflation in No-Scale Supergravity in Light of BICEP2
• A No-Scale Inflationary Model to Fit Them All
• Generic Scalar Potentials for Inflation in Supergravity with a Single Chiral Superfield
• Kahler potentials for Planck inflation

Cited by in corpus (34)

• Cosmological Attractors and Initial Conditions for Inflation
• Planck, LHC, and $\alpha$-attractors
• Single-field $\alpha$-attractors
• Palatini inflation in models with an $R^2$ term
• Calculations of Inflaton Decays and Reheating: with Applications to No-Scale Inflation Models
• Cosmological Attractors from $\alpha$-Scale Supergravity
• Inflation and High-Scale Supersymmetry with an EeV Gravitino
• Phenomenological Aspects of No-Scale Inflation Models
• Cosmological Attractors and Asymptotic Freedom of the Inflaton Field
• Inflatino-less Cosmology
• Keeping the relation between the Starobinsky model and no-scale supergravity ACTive
• Unified No-Scale Attractors
• No-Scale Inflation
• Matter-coupled de Sitter Supergravity
• Starobinsky-Like Inflation and Neutrino Masses in a No-Scale SO(10) Model
• Inflation and Leptogenesis in High-Scale Supersymmetry
• Starobinsky-Type Inflation With Products of Kaehler Manifolds
• Phenomenology and Cosmology of No-Scale Attractor Models of Inflation
• From $R^2$ Gravity to No-Scale Supergravity
• Starobinsky Inflation: From Non-SUSY To SUGRA Realizations
• Observational constraints on the generalized $\alpha$ attractor model
• Towards a formulation of $f(R)$ supergravity
• Inflation from a No-scale supersymmetric $SU(4{)}_c\times SU(2{)}_L\times SU(2{)}_R$ model
• Deforming the Starobinsky model in ghost-free higher derivative supergravities
• Non-Oscillatory No-Scale Inflation
• Toward pole inflation and attractors in supergravity : Chiral matter field inflation
• Noether symmetry approach in the cosmological alpha-attractors
• ${\mathcal{R}}^2$ Supergravity
• Starobinsky inflation from new-minimal supergravity
• Black Hole Solutions in $R^2$ Gravity
• 1D Supergravity FLRW Model of Starobinsky
• Toward a gravitational network: Bridging metric-affine gravity and no-scale supergravity
• Starobinsky Inflation with T-Model Kaehler Geometries
• Gravitino condensation, supersymmetry breaking and inflation