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Some remarks about non-minimally coupled scalar field models

May 10, 2014

32 pages

Published in:

Class.Quant.Grav. 31 (2014) 19, 195011

Published: Sep 18, 2014

e-Print:

1405.2465 [gr-qc]

DOI:

10.1088/0264-9381/31/19/195011

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Abstract: (IOP)

Several results related to flat Friedmann–Lema

\hat{\imath }

tre–Robertson–Walker models in the conformal (Einstein) frame of scalar–tensor gravity theories are extended. Scalar fields with arbitrary (positive) potentials and arbitrary coupling functions are considered. Mild assumptions under such functions (differentiable class, number of singular points, asymptotes, etc) are introduced in a straightforward manner in order to characterize the asymptotic structure on a phase space. We pay special attention to the possible scaling solutions. Numerical evidence confirming our results is presented.

Note:

32 pages, 6 figures. Matches the published version in CQG

95.36.+x
95.30.Sf
04.20.Ha
98.80.Cq
relativity and gravitation
dark energy
asymptotic structure
field theory: scalar
coupling: nonminimal
gravitation: scalar tensor

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