K-Bounce

Abstract

By demanding that a bounce is nonsingular and that perturbations are well-behaved at all times, we narrow the scope of possible models with one degree of freedom that can describe a bounce in the absence of spatial curvature. We compute the general properties of the transfer matrix of perturbations through the bounce, and show that spectral distortions of the Bardeen potential $\Phi$ are generically produced only for the small wavelengths, although the spectrum of long wavelength curvature perturbations produced in a contracting phase gets propagated unaffected through such a bounce.

Replaced with version accepted to JCAP

References in corpus (2)

• Can dark energy evolve to the Phantom?
• A non inflationary model with scale invariant cosmological perturbations

Cited by in corpus (10)

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• Evolution of Metric Perturbations in Quintom Bounce model
• Bounce and cyclic cosmology in extended nonlinear massive gravity
• A classical bounce: constraints and consequences
• Spectra of primordial fluctuations in two-perfect-fluid regular bounces
• Cosmological Perturbations on a Bouncing Brane
• On the Transfer of Adiabatic Fluctuations through a Nonsingular Cosmological Bounce
• Initial Conditions for Bubble Universes