3 papers
gr-qc2021
Unifying gravitational waves and dark energy
Alice Garoffolo, Omar Contigiani
We present a unifying treatment for metric and scalar perturbations across different energy regimes in scalar-tensor theories of gravity. To do so, we introduce two connected symme…
gr-qc2021
Gravitational-wave cosmological distances in scalar-tensor theories of gravity
Gianmassimo Tasinato, Alice Garoffolo, Daniele Bertacca +1
We analyze the propagation of high-frequency gravitational waves (GW) in scalar-tensor theories of gravity, with the aim of examining properties of cosmological distances as inferr…
gr-qc2019
Gravitational waves and geometrical optics in scalar-tensor theories
Alice Garoffolo, Gianmassimo Tasinato, Carmelita Carbone +2
The detection of gravitational waves (GWs) propagating through cosmic structures can provide invaluable information on the geometry and content of our Universe, as well as on the f…