A Minimal Inflation Scenario

Abstract

We elaborate on a minimal inflation scenario based entirely on the general properties of supersymmetry breaking in supergravity models. We identify the inflaton as the scalar component of the Goldstino superfield. We write plausible candidates for the effective action describing this chiral superfield. In particular the theory depends (apart from parameters of O(1)) on a single free parameter: the scale of supersymmetry breaking. This can be fixed using the amplitude of CMB cosmological perturbations and we therefore obtain the scale of supersymmetry breaking to be 10^{12-14} GeV. The model also incorporates explicit R-symmetry breaking in order to satisfy the slow roll conditions. In our model the eta-problem is solved without extra fine-tuning. We try to obtain as much information as possible in a model independent way using general symmetry properties of the theory's effective action, this leads to a new proposal on how to exit the inflationary phase and reheat the Universe.

matches published version (typo corrected)

References in corpus (6)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Standard Model Higgs boson as the inflaton
• From Linear SUSY to Constrained Superfields
• On Inflation with Non-minimal Coupling
• Superconformal Symmetry, NMSSM, and Inflation
• New models of chaotic inflation in supergravity

Cited by in corpus (44)

• Encyclopaedia Inflationaris
• Cosmology with Nilpotent Superfields
• The Minimal Volkov - Akulov - Starobinsky Supergravity
• On sgoldstino-less supergravity models of inflation
• Cosmology with orthogonal nilpotent superfields
• Constrained superfields in Supergravity
• Renormalization-group inflationary scalar electrodynamics and SU(5) scenarios confronted with Planck2013 and BICEP2 results
• Generic Scalar Potentials for Inflation in Supergravity with a Single Chiral Superfield
• Kahler potentials for Planck inflation
• Inflation induced by Gravitino Condensation in Supergravity
• The goldstone and goldstino of supersymmetric inflation
• Construction of inflationary scenarios with the Gauss-Bonnet term and nonminimal coupling
• The MSSM Higgs Sector with a Dynamical Goldstino Supermultiplet
• Cosmological attractor inflation from the RG-improved Higgs sector of finite gauge theory
• The general de Sitter supergravity component action
• Decoupling Limits of sGoldstino Modes in Global and Local Supersymmetry
• Inflation via Gravitino Condensation in Dynamically Broken Supergravity
• SUSY in the sky or a keV signature of sub-GeV gravitino dark matter
• Supersymmetry Breaking by Higher Dimension Operators
• Inflation from Supersymmetry Breaking
• Inflation from Supergravity with Gauged R-symmetry in de Sitter Vacuum
• Swampland conjectures in hybrid metric-Palatini gravity
• Three form potential in (special) minimal supergravity superspace and supermembrane supercurrent
• Low-scale SUSY breaking and the (s)goldstino physics
• Minimal Supergravity Inflation without Slow Gravitino
• A geometric bound on F-term inflation
• General sGoldstino Inflation
• A microscopic model for inflation from supersymmetry breaking
• Inflation in $R^2$ supergravity with non-minimal superpotentials
• MSSM-inspired multifield inflation
• Phenomenology of the minimal inflation scenario: inflationary trajectories and particle production
• New Kähler invariant Fayet-Iliopoulos terms in supergravity and cosmological applications
• On the Role of Space-Time Foam in Breaking Supersymmetry via the Barbero-Immirzi Parameter
• The MSSM inflation and cosmological attractors
• Supergravity, $\alpha$-attractors and primordial non-Gaussianity
• Comments on the nilpotent constraint of the goldstino superfield
• Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay
• Unitarity constraint on the Kähler curvature
• $\alpha$-attractors from supersymmetry breaking
• On Gravitino properties in a Conformal Supergravity Model
• Constrained Superfields in Dynamical Background
• Supersymmetric Inflation from the Fifth Dimension
• $F$-term Multi-Field Inflation in Supergravity without Stabiliser Superfields
• Rapid-turn inflation in supergravity is rare and tachyonic