Tracking Curvaton(s)?

Abstract

The ratio of the curvaton energy density to that of the dominant component of the background sources may be constant during a significant period in the evolution of the Universe. The possibility of having tracking curvatons, whose decay occurs prior to the nucleosynthesis epoch, is studied. It is argued that the tracking curvaton dynamics is disfavoured since the value of the curvature perturbations prior to curvaton decay is smaller than the value required by observations. It is also argued, in a related context, that the minimal inflationary curvature scale compatible with the curvaton paradigm may be lowered in the case of low-scale quintessential inflation.

20 pages, 4figures

References in corpus (8)

• Adiabatic density perturbations and matter generation from the MSSM
• MSSM flat direction as a curvaton
• The Curvaton Hypothesis and the eta-problem of Quintessential Inflation, with and without Branes
• Can the curvaton paradigm accommodate a low inflation scale?
• The Peccei-Quinn Field as Curvaton
• Low-scale Quintessential Inflation
• Large Scale Structure from the Higgs fields of the Supersymmetric Standard Model
• A Supersymmetric Standard Model of Inflation with Extra Dimensions

Cited by in corpus (11)

• Primordial Structure of Massive Black Hole Clusters
• Models of inflation liberated by the curvaton hypothesis
• Can the curvaton paradigm accommodate a low inflation scale?
• Generating the curvature perturbation with instant preheating
• Brane inflation without slow-roll
• Curvaton scenario with low scale inflation revisited
• Sneutrino condensate as a candidate for the hot big bang cosmology
• NO Curvatons or Hybrid Quintessential Inflation
• Non-Gaussianity in three fluid curvaton model
• Spectator Higgs, large-scale gauge fields and the non-minimal coupling to gravity
• Curvaton decay into relativistic matter