Spotted Inflation
arXiv:1008.0164 · doi:10.1088/1475-7516/2010/11/036
Abstract
We describe new scenarios of generating curvature perturbations when inflaton (curvaton) has significant interactions. We consider a ``spot'', which arises from interactions associated with enhanced symmetric point (ESP) on the trajectory. Our first example uses the spot to induce a gap to the field equation. We observe that the gap in the field equation may cause generation of curvature perturbation if it appears not simultaneous in space. The mechanism is similar to the scenario of inhomogeneous phase transition. Then we observe that the spot interactions may initiate warm inflation in the cold Universe. Creation of cosmological perturbation is discussed in relation to the inflaton dynamics and the modulation associated with the spot interactions.
29pages, 2 figures, footnotes are added for clarification, accepted for publication in JCAP
References in corpus (59)
- Generating the curvature perturbation without an inflaton
- Effects of Cosmological Moduli Fields on Cosmic Microwave Background
- Nongaussian Isocurvature Perturbations from Inflation
- Warm Inflation
- Thermal Inflation and the Moduli Problem
- Introduction to Nonequilibrium Quantum Field Theory
- Instant Preheating
- Scalar perturbation spectra from warm inflation
- Beauty is Attractive: Moduli Trapping at Enhanced Symmetry Points
- Strong Dissipative Behavior in Quantum Field Theory
- Generating the curvature perturbation at the end of inflation
- Cosmological Perturbations From Inhomogeneous Reheating, Freeze-Out, and Mass Domination
- Probing String Theory with Modulated Cosmological Fluctuations
- A First Principles Warm Inflation Model that Solves the Cosmological Horizon/Flatness Problems
- Density fluctuations from warm inflation
- Modulated fluctuations from hybrid inflation
- Affinity for Scalar Fields to Dissipate
- Construction of a robust warm inflation mechanism
- On the consistency of warm inflation
- Can the curvaton paradigm accommodate a low inflation scale?
- Curvature Perturbations from Broken Symmetries
- The warm inflationary universe
- Dynamics of Interacting Scalar Fields in Expanding Space-Time
- Thermal Effects on Pure and Hybrid Inflation
- Affleck-Dine baryogenesis after thermal brane inflation
- Particle production and reheating in the inflationary universe
- Successful D-term Inflation with moduli
- Topological Curvatons
- Dissipation coefficients for supersymmetric inflatonary models
- Trapped Quintessential Inflation
- Warm inflation dynamics in the low temperature regime
- Generating the curvature perturbation with instant preheating
- Curvaton paradigm can accommodate multiple low inflation scales
- Modulated Inflation
- Longevity of supersymmetric flat directions
- The nonperturbative decay of SUSY flat directions
- Cosmological perturbations from inhomogeneous preheating and multi-field trapping
- Affleck-Dine condensate, late thermalization and the gravitino problem
- Elliptic Inflation: Generating the curvature perturbation without slow-roll
- Hilltop Curvatons
- Density Fluctuations in Thermal Inflation and Non-Gaussianity
- Cosmological perturbations from an inhomogeneous phase transition
- Friction in inflaton equations of motion
- Sneutrino warm inflation in the minimal supersymmetric model
- NO Curvatons or Hybrid Quintessential Inflation
- Generating curvature perturbations with or without MSSM flat directions
- Evolution of the curvature perturbations during warm inflation
- SUSY Flat Direction Decay - the prospect of particle production and preheating investigated in the unitary gauge
- Delta-N formalism for the evolution of the curvature perturbations in generalized multi-field inflation
- Remote Inflation: Hybrid-like inflation without hybrid-type potential
- Correlated Hybrid Fluctuations from Inflation with Thermal Dissipation
- Hybrid Curvatons from Broken Symmetry
- Evolution of curvature perturbation in generalized gravity theories
- Modulated inflation from kinetic term
- Fresh inflation with increasing cosmological parameter
- Dissipation in equations of motion of scalar fields
- Remote Inflation as hybrid-like sneutrino/MSSM inflation
- A new perspective on supersymmetric inflation
- Entropy production and curvature perturbation from dissipative curvatons
Cited by in corpus (6)
- SUSY dark matter(s)
- Beauty is Distractive: Particle production during multifield inflation
- Beauty is more attractive: Particle Production and Moduli trapping with Higher Dimensional Interaction
- Particle production and dissipation caused by the Kaluza-Klein tower
- Enhanced Preheating after Multi-Field Inflation: On the Importance of being Special
- Particle Production during Inflation in Light of PLANCK