Einstein-like equations with coupled-to-matter Lambda term

Authors
Citation
C. Massa, Einstein-like equations with coupled-to-matter Lambda term, ASTRO SP SC, 271(1), 2000, pp. 83-89
Citations number
25
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICS AND SPACE SCIENCE
ISSN journal
0004640X → ACNP
Volume
271
Issue
1
Year of publication
2000
Pages
83 - 89
Database
ISI
SICI code
0004-640X(2000)271:1<83:EEWCLT>2.0.ZU;2-A
Abstract
We consider Einstein-like gravitational equations with Lambda term proporti onal to the trace of the energy tensor. The possibility of Lagrangian formu lation is shortly discussed. The theory is consistent with the present-day observations, both at the local and cosmological level. Horizon-free cosmol ogical solutions are found and discussed. The initial condition S(0) = 0 (w here S(t) is the expansion factor and t the cosmic time) requires hyperboli c space.