Cosmic acceleration from effective forces?

Details Cosmic acceleration from effective forces? Cosmic acceleration from effective forces?

2001-10-12

arxiv.org/abs/astro-ph/0110296v1

Astronomy and Astrophysics

Astrophysics

3 pages, 2 figures, contribution at ``Lighthouses of the Universe'', Garching, August 2001

Scientific paper

10.1007/10856495_84

Accelerated expansion of the Universe may result from an anti-frictional force that is self-consistently exerted on cold dark matter (CDM). Cosmic anti-friction is shown to give rise to an effective negative pressure of the cosmic medium. While other models introduce a component of dark energy besides ``standard'' CDM, we resort to a phenomenological one-component model of CDM with internal self-interactions. We demonstrate how the dynamics of the LambdaCDM model may be recovered as a special case of cosmic anti-friction.

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