The effects of a fast-turning trajectory in multiple-field inflation
arXiv:1401.6163 · doi:10.1088/1475-7516/2014/07/030
Abstract
The latest results from PLANCK impose strong constraints on features in the spectrum of the curvature perturbations from inflation. We analyse the possibility of particle production induced by sharp turns of the trajectory in field space in inflation models with multiple fields. Although the evolution of the background fields can be altered by particle production, we find rather modest changes in the power spectrum even for the most extreme case in which the entire kinetic energy of the scalar fields is converted into particles.
33 pages, 6 figures, matches published version
References in corpus (10)
- Non-Gaussianities in two-field inflation
- Curvature and isocurvature perturbations in two-field inflation
- Mass hierarchies and non-decoupling in multi-scalar field dynamics
- Trapped Inflation
- Strongly Coupled Perturbations in Two-Field Inflationary Models
- Inflationary perturbation theory is geometrical optics in phase space
- Classicality of the primordial perturbations
- Dilaton Dynamics from Production of Tensionless Membranes
- Beauty is more attractive: Particle Production and Moduli trapping with Higher Dimensional Interaction
- Testing Two-Field Inflation
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- Effect of transitions in the Planck mass during inflation on primordial power spectra
- The effect of multiple features on the power spectrum in two-field inflation
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- Combined features in the primordial spectra induced by a sudden turn in two-field DBI inflation
- Local random potentials of high differentiability to model the Landscape
- Correlated primordial spectra in effective theory of inflation
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- A Universal Bound on Excitations of Heavy Fields during Inflation
- Asymmetric reheating from a symmetric inflationary potential
- Enlarging the Space of Viable Inflation Models: A Slingshot Mechanism
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- Investigating the Constraints on Primordial Features with Future Cosmic Microwave Background and Galaxy Surveys
- Cosmological perturbation theory with trinity of scalar fields