Phenomenological Aspects of No-Scale Inflation Models

Abstract

We discuss phenomenological aspects of no-scale supergravity inflationary models motivated by compactified string models, in which the inflaton may be identified either as a Kähler modulus or an untwisted matter field, focusing on models that make predictions for the scalar spectral index $n_s$ and the tensor-to-scalar ratio $r$ that are similar to the Starobinsky model. We discuss possible patterns of soft supersymmetry breaking, exhibiting examples of the pure no-scale type $m_0=B_0=A_0=0$, of the CMSSM type with universal $A_0$ and $m_0\ne 0$ at a high scale, and of the mSUGRA type with $A_0=B_0+m_0$ boundary conditions at the high input scale. These may be combined with a non-trivial gauge kinetic function that generates gaugino masses $m_{1/2}\ne 0$, or one may have a pure gravity mediation scenario where trilinear terms and gaugino masses are generated through anomalies. We also discuss inflaton decays and reheating, showing possible decay channels for the inflaton when it is either an untwisted matter field or a Kähler modulus. Reheating is very efficient if a matter field inflaton is directly coupled to MSSM fields, and both candidates lead to sufficient reheating in the presence of a non-trivial gauge kinetic function.

41 pages, 6 figures

References in corpus (28)

• Big-Bang Nucleosynthesis and Gravitino
• De Sitter Vacua from Matter Superpotentials
• Possible Signals of Wino LSP at the Large Hadron Collider
• Moduli Decays and Gravitinos
• Dark Radiation in LARGE Volume Models
• Cosmological Moduli and the Post-Inflationary Universe: A Critical Review
• Lepton Flavour Violation from SUSY--GUTs: Where do we stand for MEG, PRISM/PRIME and a Super Flavour factory
• Gravitational Gauge Mediation
• The Imaginary Starobinsky Model
• Reheating for Closed String Inflation
• Solving the $\eta$-Problem in Hybrid Inflation with Heisenberg Symmetry and Stabilized Modulus
• Resurrecting Quadratic Inflation in No-Scale Supergravity in Light of BICEP2
• Resurrecting No-Scale Supergravity Phenomenology
• Chaotic Inflation in Supergravity with Heisenberg Symmetry
• SUGRA chaotic inflation and moduli stabilisation
• Two-Field Analysis of No-Scale Supergravity Inflation
• Large-Field Inflation and Supersymmetry Breaking
• Induced-Gravity Inflation in no-Scale Supergravity and Beyond
• Inflation in no-scale supergravity
• SUSY-GUTs, SUSY-Seesaw and the Neutralino Dark Matter
• Reheating processes after Starobinsky inflation in old-minimal supergravity
• The Decay of the Inflaton in No-scale Supergravity
• On reaching the adiabatic limit in multi-field inflation
• Universality in Pure Gravity Mediation with Vector Multiplets
• Towards Matter Inflation in Heterotic String Theory
• Light Higgsinos in Pure Gravity Mediation
• Affleck-Dine Sneutrino Inflation
• Chaotic Inflation in No-Scale Supergravity with String Inspired Moduli Stabilization

Cited by in corpus (36)

• Global fits of GUT-scale SUSY models with GAMBIT
• How warm are non-thermal relics? Lyman-$\alpha$ bounds on out-of-equilibrium dark matter
• Prethermalization Production of Dark Matter
• The Case for an EeV Gravitino
• Post-Inflationary Gravitino Production Revisited
• Radiative Production of Non-thermal Dark Matter
• Inflation and High-Scale Supersymmetry with an EeV Gravitino
• Building Models of Inflation in No-Scale Supergravity
• Keeping the relation between the Starobinsky model and no-scale supergravity ACTive
• Cosmological $\alpha$-Attractors and de Sitter Landscape
• Unified No-Scale Attractors
• Starobinsky-Like Inflation and Neutrino Masses in a No-Scale SO(10) Model
• Slow and Safe Gravitinos
• 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
• No-Scale SU(5) Super-GUTs
• Starobinsky Inflation: From Non-SUSY To SUGRA Realizations
• Generalized dilaton-axion models of inflation, de Sitter vacua and spontaneous SUSY breaking in supergravity
• Induced-Gravity GUT-Scale Higgs Inflation in Supergravity
• PeV-Scale SUSY and Cosmic Strings from F-term Hybrid Inflation
• Gravitational Waves, mu Term & Leptogenesis from B-L Higgs Inflation in Supergravity
• A Unified No-Scale Model of Modulus Fixing, Inflation, Supersymmetry Breaking and Dark Energy
• Deforming the Starobinsky model in ghost-free higher derivative supergravities
• Probing the Supersymmetry-Mass Scale With F-term Hybrid Inflation
• Gravity-Mediated SUSY Breaking, R Symmetry and Hyperbolic Kaehler Geometry
• Non-Oscillatory No-Scale Inflation
• From Minkowski to de Sitter in Multifield No-Scale Models
• Low-Energy Probes of No-Scale SU(5) Super-GUTs
• Observable r, Gravitino Dark Matter, and Non-thermal Leptogenesis in No-Scale Supergravity
• $\alpha$-attractors from supersymmetry breaking
• Simple cosmological model with inflation and late times acceleration
• Reheating and Leptogenesis after Vector inflation
• Starobinsky Inflation with T-Model Kaehler Geometries
• Hybrid inflation from supersymmetry breaking