Low power on large scales in just enough inflation models

Abstract

An early stage of kinetic energy domination for inflation is applied to single-field quadratic and hybrid-type potentials considering only the amount of inflation necessary to solve the problems of the standard cosmological scenario. Using initial conditions inside the 1-sigma interval of the best-fit cosmological parameters for the potentials, low values for the quadrupole component can be obtained.

8 pages, 8 figures references and new acknowledgement added, accepted for publication

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• Power Suppression at Large Scales in String Inflation
• Constraining the kinetically dominated Universe
• A case for kinetically dominated initial conditions for inflation
• Emergent universe scenario and the low CMB multipoles
• Brane SUSY Breaking and the Gravitino Mass
• Inflection Points and the Power Spectrum
• Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
• Kasner solutions, climbing scalars and big-bang singularity
• Transients in finite inflation
• Negative running prevents eternal inflation
• Constraining Quantum Initial Conditions before Inflation
• Signatures of the Very Early Universe: Inflation, Spatial Curvature and Large Scale Anomalies
• Viability of slow-roll inflation in light of the non-zero k_min measured in the CMB power spectrum
• Pre-Inflationary Relics in the CMB?
• Quantum initial conditions for inflation and canonical invariance
• Towards the physical vacuum of cosmic inflation
• Choice of vacuum state and the relation between inflationary and Planck scales
• Quantum initial conditions for curved inflating universes
• Effects of the inflaton potential on the primordial power spectrum in Loop Quantum Cosmology scenarios
• Emergent universe revisited through the CSL theory
• Suppression of scalar power on large scales and associated bispectra
• Nearly Full-Sky Low-Multipole Cosmic Microwave Background Temperature Anisotropy: III. CMB Temperature Anomalies
• Low-$\ell$ CMB from String-Scale SUSY Breaking?
• Enlarging the Space of Viable Inflation Models: A Slingshot Mechanism
• Unique contributions to the scalar bispectrum in `just enough inflation'
• Primordial perturbations in kinetically dominated regimes of general relativity and hybrid quantum cosmology
• Finite inflation in curved space