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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    General relativity and gravitation 30 (1998), S. 289-297 
    ISSN: 1572-9532
    Keywords: COSMOLOGY ; INFLATION ; COSMOLOGICAL PERTURBATIONS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Toy models for the Hubble rate or the scalar field potential have been used to analyze the amplification of scalar perturbations through a smooth transition from inflation to the radiation era. We use a Hubble rate that arises consistently from a decaying vacuum cosmology, which evolves smoothly from nearly de Sitter inflation to radiation domination. We find exact solutions for super-horizon perturbations (scalar and tensor), and for sub-horizon perturbations in the vacuum- and radiation-dominated eras. The standard conserved quantity for super-horizon scalar perturbations is exactly constant for the growing modes, and zero for the decaying modes.
    Type of Medium: Electronic Resource
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