Scalar-tensor cosmologies with dust matter in the general relativity limit - INSPIRE

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Scalar-tensor cosmologies with dust matter in the general relativity limit

Dec, 2011

15 pages

Published in:

Phys.Rev.D 85 (2012) 064013

e-Print:

1112.5308 [gr-qc]

DOI:

10.1103/PhysRevD.85.064013

View in:

ADS Abstract Service

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Abstract: (arXiv)

We consider flat Friedmann-Lema\^{\i}tre-Robertson-Walker cosmological models in the framework of general scalar-tensor theories of gravity with arbitrary coupling functions, set in the Jordan frame, in the cosmological epoch when the energy density of the ordinary dust matter dominates over the energy density of the scalar potential. Motivated by cosmological observations, we apply an approximation scheme in the regime close to the so-called limit of general relativity. The ensuing nonlinear approximate equations for the scalar field and the Hubble parameter can be solved analytically in cosmological time. This allows us to distinguish the theories with solutions that asymptotically converge to general relativity and draw some implications about the cosmological dynamics near this limit.

Note:

15 pages

04.50.Kd
95.36.+x
98.80.Jk
energy: density
field theory: scalar
potential: scalar
space-time: Robertson-Walker
gravitation: scalar tensor
cosmological model
oscillation

References(70)

Figures(0)

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