The Observational Status of Cosmic Inflation after Planck

  title={The Observational Status of Cosmic Inflation after Planck},
  author={J{\'e}r{\^o}me Martin},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  • Jérôme Martin
  • Published 19 February 2015
  • Physics
  • arXiv: Cosmology and Nongalactic Astrophysics
The observational status of inflation after the Planck 2013 and 2015 results and the BICEP2/Keck Array and Planck joint analysis is discussed. These pedagogical lecture notes are intended to serve as a technical guide filling the gap between the theoretical articles on inflation and the experimental works on astrophysical and cosmological data. After a short discussion of the central tenets at the basis of inflation (negative self-gravitating pressure) and its experimental verifications, it… 
Predictions of Spectral Parameters by Several Inflationary Universe Models in Light of the Planck Results
I give a review of predictions of values of spectral parameters for a large number of inflationary models. The present review includes detailed deductions and information about the approximations
Inflaton candidates: from string theory to particle physics
Cosmic inflation is the cornerstone of modern cosmology. In particular, following the Planck mission reports presented in 2015 regarding cosmic microwave background (CMB), there is an increasing
Primordial black holes from the preheating instability in single-field inflation
After the end of inflation, the inflaton field oscillates around a local minimum of its potential and decays into ordinary matter. These oscillations trigger a resonant instability for cosmological
What have the Planck data taught us about inflation
We discuss the implications of the recently released Planck data for inflation. We show that they favor the simplest category of inflationary models, namely single-field slow-roll inflation, with a
What can quantum cosmology say about the inflationary universe
We propose a method to extract predictions from quantum cosmology for inflation that can be confronted with observations. Employing the tunneling boundary condition in quantum geometrodynamics, we
Non-oscillatory no-scale inflation
We propose a non-oscillatory no-scale supergravity model of inflation (NO-NO inflation) in which the inflaton does not oscillate at the end of the inflationary era. Instead, the Universe is then
Value of H, space-time patterns, vacuum, matter, expansion of the Universe, alternative cosmologies
To the experimental uncertainties on the present value H 0 of the Lundmark - Lemaitre-Hubble constant, fundamental theoretical uncertainties of several kinds should also be added. In standard
Dark matter and Standard Model reheating from conformal GUT inflation
Spontaneous breaking of conformal symmetry has been widely exploited in successful model building of both inflationary cosmology and particle physics phenomenology. Conformal Grand Unified Theory
Inflaton oscillations and post-inflationary reheating
We analyze in detail the perturbative decay of the inflaton oscillating about a generic form of its potential V(ϕ) = ϕ k , taking into account the effects of non-instantaneous reheating. We show that
Towards accurate cosmological predictions for rapidly oscillating scalar fields as dark matter
As we are entering the era of precision cosmology, it is necessary to count on accurate cosmological predictions from any proposed model of dark matter. In this paper we present a novel approach to


Inflationary Cosmological Perturbations of Quantum-Mechanical Origin
This review article aims at presenting the theory of inflation. We first describe the background spacetime behavior during the slow-roll phase and analyze how inflation ends and the Universe reheats.
Compatibility of planck and BICEP2 results in light of inflation
We investigate the implications for inflation of the detection of B-modes polarization in the cosmic microwave background by BICEP2. We show that the hypothesis of the primordial origin of the
Planck 2013 results. XXII. Constraints on inflation
We present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey,
Observational constraints on the curvaton model of inflation
Simple curvaton models can generate a mixture of correlated primordial adiabatic and isocurvature perturbations. The baryon and cold dark matter isocurvature modes differ only by an observationally
Brane inflation and the WMAP data: a Bayesian analysis
The Wilkinson Microwave Anisotropy Probe (WMAP) constraints on string inspired ''brane inflation'' are investigated. Here, the inflaton field is interpreted as the distance between two branes placed
Hunting for primordial non-Gaussianity in the cosmic microwave background
Since the first limit on the (local) primordial non-Gaussianity parameter, fNL, was obtained from the Cosmic Background Explorer (COBE) data in 2002, observations of the cosmic microwave background
Observing inflationary reheating.
This study shows that the current Planck satellite measurements of the cosmic microwave background anisotropies constrain the kinematic properties of the reheating era for most of the inflationary models, and indicates that the Bayesian evidence of a model can substantially be affected by the reheater properties.
Non-Gaussian effects in the cosmic microwave background from inflation.
  • Gangui
  • Physics
    Physical review. D, Particles and fields
  • 1994
The presence of non-Gaussian features in the cosmic microwave background (CMB) radiation maps represents one of the most long-awaited clues in the search for the actual structure of primordial
Cosmological parameter estimation and the inflationary cosmology
We consider approaches to cosmological parameter estimation in the inflationary cosmology, focusing on the required accuracy of the initial power spectra. Parametrizing the spectra, for example by