Cosmic bubbles as remnants from inflation

Details Cosmic bubbles as remnants from inflation Cosmic bubbles as remnants from inflation

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.326...48k&link_type=abstract

Nature (ISSN 0028-0836), vol. 326, March 5, 1987, p. 48, 49.

Other

31

Astronomical Models, Bubbles, Cosmology, Density Distribution, Galaxies, Universe, Mass Distribution, Perturbation Theory, Quasars, Star Clusters

Scientific paper

It is generally assumed that primordial density perturbations necessary for galaxy formation are adiabatic perturbations with a flat (scale-independent) spectrum formed during inflation. Recently it was shown that inflation may produce not only adiabatic perturbations but also isothermal perturbations with the spectra considerably different from the flat spectrum. Moreover, phase transitions which occur at the last stages of inflation may lead to formation of exponentially large bubbles and domains containing matter with different density. The authors demonstrate that such effects may be responsible for the observed foam-like large-scale structure of the Universe.

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