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Perturbations in a non-singular bouncing Universe

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arxiv hep-th/0306113 v1 pith:LKAQRTHY submitted 2003-06-12 hep-th astro-phgr-qchep-ph

M. Gasperini , M. Giovannini , G. Veneziano This is my paper · ORCID
classification hep-thastro-phgr-qchep-ph
keywords non-singularperturbationsactionamplifiedanalyticallybangbouncingbouncing-curvature
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We complement the low-energy gravi-dilaton effective action of string theory with a non-local, general-covariant dilaton potential, and obtain homogeneous solutions describing a non-singular (bouncing-curvature) cosmology. We then compute, both analytically and numerically, the spectrum of amplified scalar and tensor perturbations, and draw some general lessons on how to extract observable consequences from pre-big bang and ekpyrotic scenarios.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Non-singular string cosmology via $\alpha^{\prime}$ corrections

    hep-th 2019-09 reject novelty 6.0 of 10

    The paper builds non-singular bouncing FLRW solutions in the O(d,d) invariant string cosmology action, but the higher-order coefficients are free inputs and the action consistency is unverified.

  2. Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution

    gr-qc 2017-05 accept novelty 2.0 of 10

    Modified gravity theories supply viable mathematical frameworks for inflation, bounces, and dark energy eras that match observational data.

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