Dark energy and the accelerated expansion of the Universe.

Details Dark energy and the accelerated expansion of the Universe. Dark energy and the accelerated expansion of the Universe.

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000brjph..30..370w&link_type=abstract

Braz. J. Phys., Vol. 30, No. 2, p. 370 - 379

Mathematics

Logic

Universe: Expansion, Cosmology: Gravitational Lenses

Scientific paper

Recent observations indicate that the expansion of the Universe is accelerating. This suggests the existence of some kind of exotic matter with negative pressure. The simplest possibility is a cosmological constant but there are alternatives, as for instance an evolving scalar field. In this paper the author explores constraints from lensing statistics and high-z type Ia supernovae on some of these alternatives.

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