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Scalar field dark energy perturbations and their scale dependence

โœ Scribed by Unnikrishnan, Sanil; Jassal, H. K.; Seshadri, T. R.


Book ID
120263934
Publisher
The American Physical Society
Year
2008
Tongue
English
Weight
385 KB
Volume
78
Category
Article
ISSN
1550-7998

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A dynamical scalar field represents the simplest generalization of a pure Cosmological Constant as a candidate to explain the recent evidence in favour of the accelerated cosmic expansion. We review the dynamical properties of such a component, and argue that, even if the background expectation valu