New Inflation in Waterfall Region

Abstract

We introduce a class of new inflation models within the waterfall region of a generalized hybrid inflation framework. The initial conditions are generated in the valley of hybrid preinflation. Both single-field and multi-field inflationary scenarios have been identified within this context. A supersymmetric realization of this scenario can successfully be achieved within the tribrid inflation framework. To assess the model's viability, we calculate the predictions of inflationary observables using the $\delta N$ formalism, demonstrating excellent agreement with the most recent Planck data. Furthermore, this model facilitates successful reheating and nonthermal leptogenesis, with the matter-field component of the inflaton identified as a sneutrino.

arXiv comment15 pages, 9 figures

References in corpus (48)

• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• Hybrid Inflation
• False Vacuum Inflation with Einstein Gravity
• Encyclopaedia Inflationaris
• Density Perturbations and Black Hole Formation in Hybrid Inflation
• Large Scale Structure and Supersymmetric Inflation without Fine Tuning
• Hilltop Inflation
• Particle physics models of inflation and curvaton scenarios
• Smooth Hybrid Inflation
• Supersymmetric Hybrid Inflation with Non-Minimal Kahler potential
• More hilltop inflation models
• Reheat temperature in supersymmetric hybrid inflation models
• Supersymmetric Hybrid Inflation Redux
• Hybrid inflation along waterfall trajectories
• Supersymmetric And Smooth Hybrid Inflation In The Light Of WMAP3
• New inflation, preinflation, and leptogenesis
• Testing Supersymmetric Grand Unified Models of Inflation
• Primordial Black Hole Formation in Supergravity
• Dynamical Tuning of the Initial Condition for New Inflation in Supergravity
• δN formalism
• Inflation and Supersymmetry Breaking
• Sneutrino Hybrid Inflation in Supergravity
• Initial Conditions for Smooth Hybrid Inflation
• Minimal Supersymmetric Hybrid Inflation, Flipped SU(5) and Proton Decay
• Hybrid Inflation in the Complex Plane
• On the waterfall behavior in hybrid inflation
• Observable Gravity Waves from Supersymmetric Hybrid Inflation II
• Gauge Non-Singlet Inflation in SUSY GUTs
• Smooth hybrid inflation in supergravity with a running spectral index and early star formation
• Avoiding the blue spectrum and the fine-tuning of initial conditions in hybrid inflation
• Observable Gravity Waves From Supersymmetric Hybrid Inflation
• Double Inflation in Supergravity and the Large Scale Structure
• Flavon Inflation
• Non-Gaussianities and Curvature Perturbations from Hybrid Inflation
• Hybrid Inflation Revisited in Light of WMAP5
• Metastable strings and dumbbells in supersymmetric hybrid inflation
• Red Spectral Tilt and Observable Gravity Waves in Shifted Hybrid Inflation
• Kähler-driven Tribrid Inflation
• Simplified Smooth Inflation with Observable Gravity Waves
• Slow Roll during the Waterfall Regime: The Small Coupling Window for SUSY Hybrid Inflation
• Enlarging the parameter space of standard hybrid inflation
• Simplified Smooth Hybrid Inflation in Supersymmetric SU(5)
• New Inflation in Supersymmetric SU(5) and Flipped SU(5) GUT Models
• Hilltop inflation with preinflation from coupling to matter fields
• Pseudosmooth Tribrid Inflation
• Effects of the imaginary inflaton component in supergravity new inflation
• Observable r, Gravitino Dark Matter, and Non-thermal Leptogenesis in No-Scale Supergravity
• Quantum Smearing in Hybrid Inflation with Chaotic Potentials

Cited by in corpus (1)

• Smooth $\mu$-Hybrid and Non-Minimal Higgs Inflation in $SU(4{)}_C\times SU(2{)}_L\times SU(2{)}_R$ With Observable Gravitational Waves