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Isotropisation of Bianchi class A models with curvature for a minimally coupled scalar tensor theory

Stephane Fay
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Abstract

We look for necessary isotropisation conditions of Bianchi class $A$ models with curvature in presence of a massive and minimally coupled scalar field when a function $\ell$ of the scalar field tends to a constant, diverges monotonically or with sufficiently small oscillations. Isotropisation leads the metric functions to tend to a power or exponential law of the proper time $t$ and the potential respectively to vanish as $t^{-2}$ or to a constant. Moreover, isotropisation always requires late time accelerated expansion and flatness of the Universe.

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Stephane Fay. 2003-09-19. Isotropisation of Bianchi class A models with curvature for a minimally coupled scalar tensor theory. https://doi.org/10.1088/0264-9381%2F20%2F7%2F308

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