361 citations · 2.6k across the 38 of their papers we have counts for
38 papers
Linear Growth of Structure in the Symmetron Model
Philippe Brax, Carsten van de Bruck, Anne-Christine Davis +3
In the symmetron mechanism, the fifth force mediated by a coupled scalar field (the symmetron) is suppressed in high-density regions due to the restoration of symmetry in the symme…
The Value of the Cosmological Constant
John D. Barrow, Douglas J. Shaw
We make the cosmological constant, Λ, into a field and restrict the variations of the action with respect to it by causality. This creates an additional Einstein constraint equatio…
Nonlinear Structure Formation with the Environmentally Dependent Dilaton
Phil Brax, Carsten van de Bruck, Anne-C. Davis +2
We have studied the nonlinear structure formation of the environmentally dependent dilaton model using -body simulations. We find that the mechanism of suppressing the scalar fi…
Modified Gravity Makes Galaxies Brighter
Anne-Christine Davis, Eugene A. Lim, Jeremy Sakstein +1
We investigate the effect of modifed gravity with screening mechanisms, such as the chameleon or symmetron models, upon the structure of main sequence stars. We find that unscreene…
A Testable Solution of the Cosmological Constant and Coincidence Problems
Douglas J. Shaw, John D. Barrow
We present a new solution to the cosmological constant (CC) and coincidence problems in which the observed value of the CC, , is linked to other observable properties of the uni…
The Chameleonic Contribution to the SZ Radial Profile of the Coma Cluster
Anne-Christine Davis, Camilla A. O. Schelpe, Douglas J. Shaw
We constrain the chameleonic Sunyaev--Zel'dovich (CSZ) effect in the Coma cluster from measurements of the Coma radial profile presented in the WMAP 7-year results. The CSZ effect…