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Alive and well: mimetic gravity and a higher-order extension in light of GW170817
Alessandro Casalino, Massimiliano Rinaldi, Lorenzo Sebastiani +1
The near-simultaneous multi-messenger detection of the gravitational wave (GW) event GW170817 and its optical counterpart, the short -ray burst GRB170817A, implies that deviatio…
Testing Horndeski gravity as dark matter with $\texttt{hi_class}$
Alessandro Casalino, Massimiliano Rinaldi
We consider a model of dark matter fluid based on a sector of Horndeski gravity. The model is very successful, at the background level, in reproducing the evolution of the Universe…
Mimicking dark matter and dark energy in a mimetic model compatible with GW170817
Alessandro Casalino, Massimiliano Rinaldi, Lorenzo Sebastiani +1
The recent observation of the the gravitational wave event GW170817 and of its electromagnetic counterpart GRB170817A, from a binary neutron star merger, has established that the s…