Title: Gauge-invariant density fluctuations in a cold dark matter universe
Abstract: Adiabatic density fluctuations of a cold collisionless gas in a radiation background are examined using a gauge-invariant formalism. Particular attention is paid to fluctuations which cross the horizon during the radiation-dominated era. The resulting density spectrum invalidates previous arguments that a Zel'dovich primordial fluctuation spectrum is not consistent with an axion-dominated universe.
Publication Year: 1984
Publication Date: 1984-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 4
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