90 citations · 241 across the 4 of their papers we have counts for
4 papers
Reconstructing the evolution of dark energy with variations of fundamental parameters
N. J. Nunes, T. Dent, C. J. A. P. Martins +1
Under the assumption that the variations of parameters of nature and the current acceleration of the universe are related and governed by the evolution of a single scalar field, we…
Averaging Robertson-Walker Cosmologies
Iain A. Brown, Georg Robbers, Juliane Behrend
The cosmological backreaction arises when one directly averages the Einstein equations to recover an effective Robertson-Walker cosmology, rather than assuming a background a prior…
Shifting the Universe: Early Dark Energy and Standard Rulers
Eric V. Linder, Georg Robbers
The presence of dark energy at high redshift influences both the cosmic sound horizon and the distance to last scattering of the cosmic microwave background. We demonstrate that th…
Neutrino clustering in growing neutrino quintessence
D. F. Mota, V. Pettorino, G. Robbers +1
A growing neutrino mass can stop the dynamical evolution of a dark energy scalar field, thus explaining the 'why now' problem. We show that such models lead to a substantial neutri…