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Radial acceleration relation from symmetron fifth forces
Clare Burrage, Edmund J. Copeland, Peter Millington
We show that the radial acceleration relation for rotationally-supported galaxies may be explained, in the absence of cold dark matter, by a non-minimally coupled scalar field, who…
A Proposed Experimental Search for Chameleons using Asymmetric Parallel Plates
Clare Burrage, Edmund J. Copeland, James A. Stevenson
Light scalar fields coupled to matter are a common consequence of theories of dark energy and attempts to solve the cosmological constant problem. The chameleon screening mechanism…
CMB constraints on cosmic strings and superstrings
Tom Charnock, Anastasios Avgoustidis, Edmund J. Copeland +1
We present the first complete Markov chain Monte Carlo analysis of cosmological models with evolving cosmic (super)string networks, using the unconnected segment model in the unequ…