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Recent Observational Constraints on the DGP Modified Gravity | | M. Sadegh Movahed
; Marzieh Farhang
; Sohrab Rahvar
; | | Date: |
11 Jan 2007 | | Abstract: | We study one of the simplest covariant modified-gravity models based on the Dvali-Gabadadze-Porrati (DGP) brane cosmology, a self-accelerating universe. The effects of the model parameters on the geometry and the age of universe are investigated. As the observational test, the new Supernova Type Ia (SNIa) Gold sample and Supernova Legacy Survey (SNLS) data, size of baryonic acoustic peak from Sloan Digital Sky Survey (SDSS), the position of the acoustic peak from the CMB observations and large scale structure formation (LSS) from the 2dFGRS survey are used to constrain the parameters of the DGP model. Finally we compare the age of old cosmological objects with age of universe in this model | | Source: | arXiv, astro-ph/0701339 | | Services: | Forum | Review | PDF | Favorites | |
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