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Structure formation constraints on the Jordan-Brans-Dicke theory | | Viviana Acquaviva
; Carlo Baccigalupi
; Samuel M. Leach
; Andrew R. Liddle
; Francesca Perrotta
; | | Date: |
2 Dec 2004 | | Journal: | Phys.Rev. D71 (2005) 104025 | | Subject: | astro-ph gr-qc | | Abstract: | 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=1/4omega, and performing an exploration in the range lnxi in [-9,3], we obtain a 95% marginalized probability bound of lnxi < -6.2, corresponding to a 95% marginalized probability lower bound on the Brans-Dicke parameter omega>120. | | Source: | arXiv, astro-ph/0412052 | | Services: | Forum | Review | PDF | Favorites | |
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