Spectrum of adiabatic perturbations in the universe when there are singularities in the inflationary potential.

Details Spectrum of adiabatic perturbations in the universe when there are singularities in the inflationary potential. Spectrum of adiabatic perturbations in the universe when there are singularities in the inflationary potential.

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jetpl..55..489s&link_type=abstract

JETP Lett., Vol. 55, No. 9, p. 489 - 494

Physics

142

Scientific paper

If the potential of the effective scalar which controls the de Sitter (inflationary) stage in the early universe has a singularity consisting of a rounded change in slope, a step of a universal form arises in the spectrum of adiabatic perturbations. Along with this step, there are superimposed modulations. If the singularity in the potential is instead a rounded jump, a hump appears in the spectrum.

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