737 citations · 5.3k across the 53 of their papers we have counts for
4 papers · 1 filter
Measuring deviations from a cosmological constant: a field-space parameterization
Robert Crittenden, Elisabetta Majerotto, Federico Piazza
Most parameterizations of the dark energy equation of state do not reflect realistic underlying physical models. Here, we develop a relatively simple description of dark energy bas…
SNLS data are consistent with acceleration at z=3
Luca Amendola, M. Gasperini, Federico Piazza
We point out that the Type Ia supernovae in the SNLS dataset are consistent with an early beginning of the cosmic acceleration if dark energy interacts strongly with dark matter. W…
Fitting Type Ia supernovae with coupled dark energy
Luca Amendola, Maurizio Gasperini, Federico Piazza
We discuss the possible consistency of the recently discovered Type Ia supernovae at z>1 with models in which dark energy is strongly coupled to a significant fraction of dark matt…
The GraS Hypothesis: a Model for Dark Matter-Baryons Gravitational Interaction
Federico Piazza, Christian Marinoni
According to the gravitational suppression (GraS) hypothesis the gravitational interaction between exotic (dark) and standard (visible) matter is suppressed below the kpc scales. W…