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Oscillatory regime in the multidimensional homogeneous cosmological models induced by a vector field

R Benini1, A A Kirillov2 and Giovanni Montani3

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We show that in multidimensional gravity, vector fields completely determine the structure and properties of singularity. It turns out that in the presence of a vector field the oscillatory regime exists in all spatial dimensions and for all homogeneous models. By analysing the Hamiltonian equations we derive the Poincaré return map associated with the Kasner indexes and fix the rules according to which the Kasner vectors rotate. In correspondence to a four-dimensional spacetime, the oscillatory regime here constructed overlaps the usual Belinski–Khalatnikov–Liftshitz one.


PACS

98.80.-k Cosmology

04.20.Dw Singularities and cosmic censorship

MSC

83F05 Cosmology

83C75 Space-time singularities, cosmic censorship, etc.

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 7 (7 April 2005)

Received 23 November 2004

Published 17 March 2005



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