Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1999-07-16
Int.J.Mod.Phys. D8 (1999) 705-718
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
LaTex file, 14 pages
Scientific paper
10.1142/S0218271899000511
We present new exact cosmological inhomogeneous solutions for gravity coupled to a scalar field in a general framework specified by the parameter $\lambda$. The equations of motion (and consequently the solutions) in this framework correspond either to low-energy string theory or Weyl integrable spacetime according to the sign of $\lambda$. We show that different inflationary behaviours are possible, as suggested by the study of the violation of the strong energy condition. Finally, by the analysis of certain curvature scalars we found that some of the solutions may be nonsingular.
Hibberd Katrina E.
Perez Bergliaffa Santiago E.
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