LINKING TESTS OF GRAVITY ON ALL SCALES: FROM THE STRONG-FIELD REGIME TO COSMOLOGY
Tessa BakerAstrophysics, Denys Wilkinson Building, Keble Road, University of Oxford, Oxford OX1 3RH, UKDimitrios PsaltisAstronomy Department, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USAConstantinos SkordisSchool of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK
2015en
ABI
Abstract
The current effort to test General Relativity employs multiple disparate formalisms for different observables, obscuring the relations between laboratory, astrophysical and cosmological constraints. To remedy this situation, we develop a parameter space for comparing tests of gravity on all scales in the universe. In particular, we present new methods for linking cosmological large-scale structure, the Cosmic Microwave Background and gravitational waves with classic PPN tests of gravity. Diagrams of this gravitational parameter space reveal a noticeable untested regime. The untested window, which separates small-scale systems from the troubled cosmological regime, could potentially hide the onset of corrections to General Relativity.
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Cited by 30 references