Primordial density fluctuations

Details Primordial density fluctuations Primordial density fluctuations

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cqgra...3..417k&link_type=abstract

Classical and Quantum Gravity (ISSN 0264-9381), vol. 3, May 1, 1986, p. 417-423.

Physics

1

Cosmology, Flux Density, Quantum Mechanics, Vacuum Systems, Asymptotic Methods, Differential Equations, Equations Of Motion, Hubble Constant, Scalars, Space-Time Functions, Time Dependence

Scientific paper

For potentials with an almost flat section, a general expression is derived for the time evolution of energy density correlations inside the horizon, for an arbitrary quantum state. The particular case of the de Sitter invariant vacuum is studied in detail. At the horizon an energy contrast is found to be one order of magnitude larger than usual estimates based on the Hawking (1982) temperature. The source for this contribution are quantum fluctuations at short distances. The small correction due to the time dependence of the Hubble constant is also estimated.

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