297 citations · 2.8k across the 57 of their papers we have counts for
5 papers · 1 filter
A low-redshift preference for an interacting dark energy model
Yuejia Zhai, Marco de Cesare, Carsten van de Bruck +2
We explore an interacting dark sector model in trace-free Einstein gravity where dark energy has a constant equation of state, , and the energy-momentum transfer potential is…
Observational constraints on anisotropies for bouncing alternatives to inflation
Ivan Agullo, Javier Olmedo, Edward Wilson-Ewing
We calculate how primordial anisotropies in the background space-time affect the evolution of cosmological perturbations for bouncing alternatives to inflation, like ekpyrosis and…
Resolving the tension with diffusion
Alejandro Perez, Daniel Sudarsky, Edward Wilson-Ewing
The tension between the value of the Hubble constant determined from local supernovae data and the one inferred from the cosmic microwave background based on the CDM cosmo…
Bouncing cosmologies with dark matter and dark energy
Yi-Fu Cai, Antonino Marciano, Dong-Gang Wang +1
We review matter bounce scenarios where the matter content is dark matter and dark energy. These cosmologies predict a nearly scale-invariant power spectrum with a slightly red til…
Nonsingular bouncing cosmologies in light of BICEP2
Yi-Fu Cai, Jerome Quintin, Emmanuel N. Saridakis +1
We confront various nonsingular bouncing cosmologies with the recently released BICEP2 data and investigate the observational constraints on their parameter space. In particular, w…