| Issue |
Europhys. Lett.
Volume 46, Number 6, June II 1999
|
|
|---|---|---|
| Page(s) | 832 - 837 | |
| Section | Geophysics, astronomy and astrophysics | |
| DOI | https://doi.org/10.1209/epl/i1999-00340-1 | |
| Published online | 01 September 2002 | |
Inhomogeneous cosmological models in scalar-tensor theories
1
Department of
Mathematics, Statistics and Computing Science and Department of
Physics, Dalhousie University -
Halifax, Nova Scotia, Canada B3H 3J5
2
Departamento de Física Teórica,
Universidad del Pais Vasco - Bilbao, Spain
Received:
12
October
1998
Accepted:
13
April
1999
Exact self-similar spatially inhomogeneous 
cosmological models
are found in a class of scalar-tensor theories of gravity by exploiting
the formal equivalence of this class of theories (under a conformal
transformation and field redefinition) to general relativity minimally
coupled to a scalar field with an exponential potential. We argue that these
exact self-similar solutions may play an important role in describing
the asymptotic
behaviour (both at early and at late times) of more general scalar-tensor
models. The possible isotropization and the homogenization of these
models is briefy discussed.
PACS: 98.80.Hw – Mathematical and relativistic aspects of cosmology; quantum cosmology
© EDP Sciences, 1999
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