Non scale-invariant density perturbations from chaotic extended inflation

Details Non scale-invariant density perturbations from chaotic extended inflation Non scale-invariant density perturbations from chaotic extended inflation

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991stin...9211947m&link_type=abstract

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Astronomy and Astrophysics

Astrophysics

Astrophysics, Cosmology, Dark Matter, Extraterrestrial Matter, Gravitation, Perturbation, Universe, Flux Density, Galactic Clusters, Scalars, Spectra, Tensors

Scientific paper

Chaotic inflation is analyzed in the frame of scalar-tensor theories of gravity. Fluctuations in the energy density arise from quantum fluctuations of the Brans-Dicke field and of the inflation field. The spectrum of perturbations is studied for a class of models: it is non scale-invarient and, for certain values of the parameters, it has a peak. If the peak appears at astrophysically interesting scales, it may help to reconcile the Cold Dark Matter scenario for structure formation with large scale observations.

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