Cosmological perturbations of a relativistic condensate

Details Cosmological perturbations of a relativistic condensate Cosmological perturbations of a relativistic condensate

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvd..51.2703p&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 51, Issue 6, 15 March 1995, pp.2703-2712

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11

Particle-Theory And Field-Theory Models Of The Early Universe, Other Topics In General Relativity And Gravitation, Boson Systems, Other Topics In General Theory Of Fields And Particles

Scientific paper

Based on a model of the early Universe with a relativistic Bose-Einstein condensate as the source of inflationary expansion, we calculate the gauge-invariant measure of the cosmological density perturbations caused by the zero-point fluctuations and excitations of the condensate. An approximate conservation law in the gauge-invariant perturbation formulation is used to estimate the magnitude of the perturbations at horizon reentry. The perturbations have a scale-invariant spectrum that depends on the condensate density, the mass, and the coupling constant.

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