Hillclimbing inflation

Abstract

We propose a new class of inflationary models in which inflation takes place while the inflaton is climbing up a potential hill due to a coupling to gravity. We study their attractor behavior, and investigate its relation with known attractors. We also discuss a possible realization of this type of models with the natural inflation, and show that the inflationary predictions come well within the region consistent with the observation of the cosmic microwave background.

5 pages, 3 figures

References in corpus (6)

• The Standard Model Higgs boson as the inflaton
• The Unity of Cosmological Attractors
• Large Field Inflation and Double $\alpha$-Attractors
• Violent Preheating in Inflation with Nonminimal Coupling
• The double attractor behavior of induced inflation
• Nonminimal coupling and inflationary attractors

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• Overshooting, Critical Higgs Inflation and Second Order Gravitational Wave Signatures
• Constant-roll tachyon inflation and observational constraints
• Higgs inflation in metric and Palatini formalisms: Required suppression of higher dimensional operators
• Reconstructing a $f(R)$ theory from the $\alpha$-Attractors
• Hillclimbing inflation in metric and Palatini formulations
• Reconstructing inflation in scalar-torsion $f(T,\varphi )$ gravity
• Reconstruction of constant slow-roll inflation
• Critical point Higgs inflation in the Palatini formulation
• Reconstructing warm inflation
• Higgs-$R^2$ inflation -- full slow-roll study at tree-level
• Hillclimbing Higgs inflation
• Constant roll warm inflation in high dissipative regime
• The Reconstruction of Non-Minimal Derivative Coupling Inflationary Potentials
• Hill-climbing dark inflation
• Hillclimbing saddle point inflation