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Effect of a chameleon scalar field on the cosmic microwave background

✍ Scribed by Davis, Anne-Christine; Schelpe, Camilla A. O.; Shaw, Douglas J.

Book ID
120018567
Publisher
The American Physical Society
Year
2009
Tongue
English
Weight
464 KB
Volume
80
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