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Dynamical Study of the Singularities of Gravity in the Presence of Nonminimally Coupled Scalar Fields

par Abramo, Luís Raul Weber;Brenig, Léon ;Gunzig, Edgard ;Saa, Alberto
Référence International journal of theoretical physics, 42, 6, page (1145-1152)
Publication Publié, 2003-06

Article révisé par les pairs

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Résumé :

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 = ∫ d4x√ -g{F(φ)R - ∂aφ∂aφ - 2V(φ)}, with general F(φ) and V(φ). 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.