Anomalous dispersion of density waves in the early universe with positive cosmological constant

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Density perturbations in the flat (K=0) Robertson-Walker universe with radiation ($p=ε/3$) and positive cosmological constant ($Λ>0$) are investigated. The phenomenon of anomalous dispersion of acoustic waves on $Λ$ is discussed.
7 pages

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General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/34088

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0112073
 http://arxiv.org/abs/gr-qc/0112073

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arXiv