Dark energy and the accelerated expansion of the Universe
AUTOR(ES)
Waga, Ioav
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2000-06
RESUMO
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 we explore constraints from lensing statistics and high-z type Ia Supernovae on some of these alternatives.
Documentos Relacionados
- Dark energy in the universe, the irreversibility of time and neutrinos
- Dark energy and cyclic universe from Arnowitt-Deser-Misner renormalizable group approach
- Irreversible processes and the accelerated-decelerated phases of the Universe
- Dark Matter in the Universe
- The age of the universe, dark matter, and structure formation