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The Spectrum of Fluctuations in Singularity-free Inflationary Quantum Cosmology

Hofmann, Stefan and Winkler, Oliver (2005) The Spectrum of Fluctuations in Singularity-free Inflationary Quantum Cosmology. [Preprint]

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    Abstract

    We calculate the power spectrum of vacuum fluctuations of a generic scalar field in a quantum cosmological setting that is manifestly singularity-free. The power spectrum is given in terms of the usual scale invariant spectrum plus scale dependent corrections. These are induced by well defined quantum fluctuations of de Sitter spacetime, resulting in a modified dispersion relation for the scalar field. The leading correction turns out to be proportional to the ratio of Hubble scale and Planck Mass. The maximal relative change in the spectrum is on the ten percent level and might be observable with future CMB experiments.

    Item Type: Preprint
    Additional Information: pubdom TRUE
    Uncontrolled Keywords: AARMS
    Subjects: 70-xx Mechanics of particles and systems
    81-xx Quantum Theory
    Faculty: UNSPECIFIED
    Depositing User: lingyun ye
    Date Deposited: 09 Jul 2007
    Last Modified: 27 Apr 2010 16:35
    URI: https://docserver.carma.newcastle.edu.au/id/eprint/354

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