Vacuum Energy: If Not Now, Then When?

Details Vacuum Energy: If Not Now, Then When? Vacuum Energy: If Not Now, Then When?

1999-07-13

arxiv.org/abs/astro-ph/9907168v1

Nucl.Phys. A663 (2000) 865-868

Astronomy and Astrophysics

Astrophysics

4 pages (latex)

Scientific paper

We review the cosmological evidence for a low matter density universe and a
cosmological constant or dynamical vacuum energy and address the cosmolog$
coincidence problem: why is the matter density about one-half the vacuum energy
{\em now}. This is reasonble, following the anthropic argument of Efstathiou
and of Martel, Schapiro & Weinberg.

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