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Astrophysical tests of modified gravity
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-10-07)
Einstein's theory of general relativity has been the accepted theory of gravity for nearly a century but how well have we really tested it? The laws of gravity have been probed in our solar system to extremely high precision ...
Dynamical analysis in scalar field cosmology
(APSPhysical Review D, 2015-06-23)
We give a general method to find exact cosmological solutions for scalar-field dark energy in the presence of perfect fluids. We use the existence of invariant transformations for the Wheeler De Witt (WdW) equation. We ...