Bouncing alternatives to inflation

Abstract

Although the inflationary paradigm is the most widely accepted explanation for the current cosmological observations, it does not necessarily correspond to what actually happened in the early stages of our Universe. To decide on this issue, two paths can be followed: first, all the possible predictions it makes must be derived thoroughly and compared with available data, and second, all imaginable alternatives must be ruled out. Leaving the first task to all other contributors of this volume, we concentrate here on the second option, focusing on the bouncing alternatives and their consequences.

11 pages, 3 figures, submitted as a contribution to the French 'Comptes Rendus de l'Academie des Sciences' on Inflation

References in corpus (9)

• A Critical Review of Classical Bouncing Cosmologies
• Cosmology without inflation
• A Matter Bounce By Means of Ghost Condensation
• A non inflationary model with scale invariant cosmological perturbations
• A classical bounce: constraints and consequences
• Unstable growth of curvature perturbation in non-singular bouncing cosmologies
• K-Bounce
• Non-Gaussianity excess problem in classical bouncing cosmologies
• Spinflation and cycling branes in warped throats

Cited by in corpus (39)

• Bouncing Cosmologies: Progress and Problems
• Non-polynomial Lagrangian approach to Regular Black Holes
• Preinflationary dynamics in loop quantum cosmology: Monodromy Potential
• Viable tensor-to-scalar ratio in a symmetric matter bounce
• Constraining $F(R)$ bouncing cosmologies with primordial black holes
• Obviating PBH overproduction for SIGWs generated by Pulsar Timing Arrays in loop corrected EFT of bounce
• Can non-minimal coupling restore the consistency condition in bouncing universes?
• Note on stability in conformally connected frames
• Warm bounce in loop quantum cosmology and the prediction for the duration of inflation
• Viable scalar spectral tilt and tensor-to-scalar ratio in near-matter bounces
• Bouncing with shear: Implications from quantum cosmology
• Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
• Bounce from Inflation
• Gravitational Particle Production in Loop Quantum Cosmology
• A pure general relativistic non-singular bouncing origin for the Universe
• Hysteresis in the Sky
• Stability of a viable non-minimal bounce
• The Kalam Cosmological Argument Meets The Mentaculus
• Stochastic collapse
• Primordial black holes as cosmic expansion accelerators
• Closer look at white hole remnants
• Curvature bounce in general relativity: background and primordial spectrum
• B-Mode auto-bispectrum due to matter bounce
• Negative non-Gaussianity as a salvager for PBHs with PTAs in bounce
• Stable contraction in Brans-Dicke cosmology
• Catastrophic fate of Schwarzschild black holes in a thermal bath
• Big Bounce or Double Bang? A Reply to Craig and Sinclair on the Interpretation of Bounce Cosmologies
• Emergent universe revisited through the CSL theory
• How Much NEC Breaking Can the Universe Endure?
• Emergent universe: tensor perturbations within the CSL framework
• Dynamical Compactification with Matter
• Loop Quantum Cosmology with a noncommutative quantum deformed photon gas
• Viable Curvaton Models from the $f_{NL}$ Parameter
• The string theory swampland in the Euclid, SKA and Vera Rubin observatory era
• Universe bouncing its way to inflation
• Horizon, homogeneity and flatness problems -- do their resolutions really depend upon inflation?
• Bounce inflation driven by Higgs field
• RRR fluctuations from non-singular bounce
• Non-singular Bouncing Cosmology in $f(R,G,T)$--Quintom model