The vacuum energy crisis

Details The vacuum energy crisis The vacuum energy crisis

2006-05-09

arxiv.org/abs/astro-ph/0605242v1

Science 312:1148-1149,2006

Astronomy and Astrophysics

Astrophysics

4 pages, no figures; invited "perspective" article in "Science" (4 May 2006)

Scientific paper

10.1126/science.1128570

The smallness of the vacuum energy density and its near coincidence with the average matter density of the universe are naturally explained by anthropic selection. An alternative explanation, based on the cyclic model of Steinhardt and Turok, does not address the coincidence problem and is therefore less convincing. This article appeared in ``Science'' (4 May 2006) as a ``perspective'' for Steinhardt and Turok's paper in the same issue (astro-ph/0605173).

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