Cosmon inflation

Abstract

The cosmon field responsible for dynamical dark energy can induce an inflationary period in early cosmology. Details depend on dilatation symmetry breaking terms in its potential and kinetic term that are relevant only during early stages of the evolution of the universe. For a large range of parameters we find realistic primordial density fluctuations. As a particular example we discuss a model with almost static geometry in the Jordan frame for all epochs of cosmology. Here the cosmic evolution of the Hubble parameter is replaced by a variation of the Planck mass and particle masses. This model predicts a spectral index $n=0.97$ and a ratio for tensor to scalar fluctuations $r=0.13$.

extended parameter space, extended discussion of entropy production, 9 pages, no figures

References in corpus (9)

• Cosmology and the Fate of Dilatation Symmetry
• Scale invariance, unimodular gravity and dark energy
• Growing Matter
• Growing neutrinos and cosmological selection
• Effective Action, Conformal Anomaly and the Issue of Quadratic Divergences
• Future CMB Constraints on Early, Cold, or Stressed Dark Energy
• Impact of three years of data from the Wilkinson Microwave Anisotropy Probe on cosmological models with dynamical dark energy
• New limits on Early Dark Energy from the South Pole Telescope
• Where to look for solving the gauge hierarchy problem?

Cited by in corpus (22)

• Variable gravity: A suitable framework for quintessential inflation
• Variable gravity Universe
• Emergent scale symmetry: Connecting inflation and dark energy
• Quintessential inflation with canonical and noncanonical scalar fields and Planck 2015 results
• Unification of inflation and dark energy {\it à la} quintessential inflation
• Inflation, quintessence, and the origin of mass
• A Universe without expansion
• Quintessential inflation: A tale of emergent and broken symmetries
• Eternal Universe
• Evading Lyth bound in models of quintessential inflation
• Relic gravitational waves from Quintessential Inflation
• Hot big bang or slow freeze?
• Fundamental Scale Invariance
• Primordial cosmic fluctuations for variable gravity
• What is needed of a scalar field if it is to unify inflation and late time acceleration ?
• Quintessential inflation with a trap and axionic dark matter
• Cosmology from pregeometry
• Bifurcations in Ratra-Peebles quintessence models and their extensions
• Effective scalar potential in asymptotically safe quantum gravity
• Tachyon field non-minimally coupled to massive neutrino matter
• Planck's Constant as a Dynamical Field & Path Integral
• Gravitational relaxation of electroweak hierarchy problem