Dynamical study of the singularities of gravity in the presence of non-minimally coupled scalar fields

Details Dynamical study of the singularities of gravity in the presence of non-minimally coupled scalar fields Dynamical study of the singularities of gravity in the presence of non-minimally coupled scalar fields

2003-05-02

arxiv.org/abs/gr-qc/0305008v1

Int.J.Theor.Phys. 42 (2003) 1145-1152

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages

Scientific paper

We investigate the dynamics of Einstein equations in the vicinity of the two recently described types of singularity of anisotropic and homogeneous cosmological models described by the action $$ S=\int d^4x \sqrt{-g}{F(\phi)R - \partial_a\phi\partial^a\phi -2V(\phi)}, $$ with general $F(\phi)$ and $V(\phi)$. The dynamical nature of each singularity is elucidated, and we show that both are, in general, dynamically unavoidable, reinforcing the unstable character of previous isotropic and homogeneous cosmological results obtained for the conformal coupling case.

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