Journal
PHYSICAL REVIEW D
Volume 71, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.71.104025
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We use cosmic microwave background data from WMAP, ACBAR, VSA and CBI, and galaxy power spectrum data from 2dF, to constrain flat cosmologies based on the Jordan-Brans-Dicke theory, using a Markov chain Monte Carlo approach. Using a parametrization based on xi = 1/4 omega, and performing an exploration in the range ln xi is an element of [-9,3], we obtain a 95% marginalized probability bound of ln xi < -6.2, corresponding to a 95% marginalized probability lower bound on the Brans-Dicke parameter omega > 120.
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