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Primordial power spectra for curved inflating universes

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arxiv 1907.08524 v2 pith:TLRCNYKK submitted 2019-07-19 astro-ph.CO gr-qc

Will Handley This is my paper · ORCID
classification astro-ph.COgr-qc
keywords curvedprimordialspectracurrentpoweruniversesallowedanalysed
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Exact numerical primordial primordial power spectra are computed and plotted for the for the best-fit Planck 2018 curved universe parameters. It is found that the spectra have generic cut-offs and oscillations within the observable window for the level of curvature allowed by current CMB measurements and provide a better fit to current data. Derivations for the Mukhanov-Sasaki equation for curved universes are presented and analysed, and theoretical implications for the quantum and classical initial conditions for inflation are discussed within the curved regime.

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Cited by 4 Pith papers

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

  1. Friction in Stochastic Inflation

    astro-ph.CO 2025-11 accept novelty 6.0 of 10

    Adding a constant drift to time-reversed stochastic inflation in a flat potential yields an exact curvature distribution with exponential tails; forward and reverse delta-N formalisms differ by a factor of two in the ...

  2. Curvature tension: evidence for a closed universe

    astro-ph.CO 2019-08 conditional novelty 6.0 of 10

    Planck's CMB data alone prefer a closed universe with odds over 50 to 1, but lensing and galaxy data prefer flat, creating a 2.5 to 3 sigma disagreement.

  3. Quasar X-ray and UV flux, baryon acoustic oscillation, and Hubble parameter measurement constraints on cosmological model parameters

    astro-ph.CO 2019-09 conditional novelty 4.0 of 10

    Quasar X-ray and UV flux data are weak but consistent with BAO and H(z) data, and the joint data mildly favor closed spatial geometry and dynamical dark energy over flat LambdaCDM.

  4. Bayesian inflationary reconstructions from Planck 2018 data

    astro-ph.CO 2019-08 conditional novelty 4.0 of 10

    Flexible Bayesian reconstructions of Planck 2018 data confirm a power-law primordial spectrum on 50<ell<2000 and leave low-ell oscillation hints statistically insignificant.

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