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    Thermal spectra in the early Universe

    Dolan, Brian P. (1991) Thermal spectra in the early Universe. Classical and Quantum Gravity, 8 (11). pp. 1955-1960. ISSN 0264-9381

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    It is shown that curvature effects, though completely negligible at the present day, can drastically alter thermal spectra at early times in some inflationary cosmological models. This can lead to a modification of the thermal history of the universe before the entropy production. The effects are only present for spatially curved k not=0 Robertson-Walker models, not for spatially flat k=0 models. If the entropy increase is >> 1087 and k not=0 then the energy density in the quantum fields is much greater, and hence the universe is much younger, at the onset of inflation than would be the case in a spatially flat universe. The effect is not relevant for chaotic inflation.

    Item Type: Article
    Additional Information: Cite as: B P Dolan 1991 Class. Quantum Grav. 8 1955
    Keywords: Thermal spectra; early Universe;
    Academic Unit: Faculty of Science and Engineering > Mathematical Physics
    Item ID: 10516
    Identification Number:
    Depositing User: Dr. Brian Dolan
    Date Deposited: 20 Feb 2019 14:30
    Journal or Publication Title: Classical and Quantum Gravity
    Publisher: Institute of Physics
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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