Marco Bruni and Carlos F Sopuerta 2003 Class. Quantum Grav. 20 5275 doi:10.1088/0264-9381/20/24/003
Marco Bruni and Carlos F Sopuerta
Show affiliationsIn this paper, we consider the long wavelength approximation scheme (LWAS) in the framework of the covariant fluid approach to general relativistic dynamics, specializing to the particular case of irrotational dust matter. We discuss the dynamics of these models during the approach to any spacelike singularity where an evolution of the Belinski–Khalatnikov–Lifshitz (BKL) type is expected, studying the validity of this approximation scheme and the role of the magnetic part of the Weyl tensor, Hab. Our analytic results confirm a previous numerical analysis: it is Hab that destroys the pure Kasner-like approach to the singularity and eventually produces the bounce to another Kasner phase. Expanding regions evolve as separate universes where inhomogeneities and anisotropies die away.
Issue 24 (21 December 2003)
Received 12 July 2003
Published 30 October 2003
Marco Bruni and Carlos F Sopuerta 2003 Class. Quantum Grav. 20 5275
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