Sourcing curvature modes with entropy perturbations in non-singular bouncing cosmologies

DOI10.1088/1475-7516/2021/06/012zbMath1485.83142arXiv2012.08249OpenAlexW3170676594MaRDI QIDQ5028726

Anna Ijjas, Roman Kolevatov

Publication date: 10 February 2022

Published in: Journal of Cosmology and Astroparticle Physics (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2012.08249

zbMATH Keywords

cosmological perturbation theoryphysics of the early universealternatives to inflationcosmic singularity

Mathematics Subject Classification ID

Relativistic cosmology (83F05) Geometrodynamics and the holographic principle (83E05) Quantum optics (81V80) Space-time singularities, cosmic censorship, etc. (83C75) Perturbations in context of PDEs (35B20) Measures of information, entropy (94A17)

Related Items (2)

Notes on the post-bounce background dynamics in bouncing cosmologies ⋮ Dynamical attractors in contracting spacetimes dominated by kinetically coupled scalar fields

Cites Work

• Subluminal Galilean genesis
• On the initial conditions in new ekpyrotic cosmology
• A contracting universe driven by two scalar fields
• Supersmoothing through slow contraction
• Generating scale-invariant tensor perturbations in the non-inflationary universe
• Fully stable cosmological solutions with a non-singular classical bounce
• Effective actions for heterotic M theory
• Bouncing cosmology made simple
• A nonsingular universe
• Space-time slicing in Horndeski theories and its implications for non-singular bouncing solutions
• Robustness of slow contraction to cosmic initial conditions
• Inflationary universe: A possible solution to the horizon and flatness problems
• Curvature perturbations from ekpyrotic collapse with multiple fields
• Generating the curvature perturbation without an inflaton

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