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Physical Review Letters, ISSN 0031-9007, 12/2017, Volume 119, Issue 25, p. 251302
The observation of GW170817 and its electromagnetic counterpart implies that gravitational waves travel at the speed of light, with deviations smaller than a... 
PHYSICS, MULTIDISCIPLINARY
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 2015, Volume 2015, Issue 2, pp. 18 - 18
Journal Article
International Journal of Modern Physics D, ISSN 0218-2718, 11/2014, Volume 23, Issue 13, pp. 1443010 - 1-1443010-38
We review and extend a novel approach that we recently introduced, to describe general dark energy or scalar-tensor models. Our approach relies on an... 
modified gravity | cosmological perturbations | Dark energy | PERTURBATIONS | ASTRONOMY & ASTROPHYSICS | Analysis | Force and energy | Tensors | Perturbation methods | Mathematical analysis | Scalars | Universe | Mathematical models | Equations of motion
Journal Article
Physical Review Letters, ISSN 0031-9007, 05/2015, Volume 114, Issue 21, p. 211101
We introduce a new class of scalar-tensor theories of gravity that extend Horndeski, or "generalized Galileon," models. Despite possessing equations of motion... 
PHYSICS, MULTIDISCIPLINARY | GRAVITY | Gravitation | Degrees of freedom | Mathematical analysis | Scalars | Joining | Derivatives | Equations of motion | Standards | General Relativity and Quantum Cosmology | High Energy Physics - Theory | Physics
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 12/2018, Volume 2018, Issue 12, pp. 25 - 25
We study the decay of gravitational waves into dark energy fluctuations pi, through the processes gamma -> pi pi and gamma -> gamma pi, made possible by the... 
modified gravity | dark energy theory | gravitational waves / theory | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS
Journal Article
Classical and Quantum Gravity, ISSN 0264-9381, 11/2013, Volume 30, Issue 21, p. 214007
The effective field theory of cosmological perturbations stems from considering a cosmological background solution as a state displaying spontaneous breaking... 
QUANTUM SCIENCE & TECHNOLOGY | PHYSICS, MULTIDISCIPLINARY | GRAVITY | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | General Relativity and Quantum Cosmology | High Energy Physics - Theory | Physics
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 02/2013, Volume 2013, Issue 2, pp. 32 - 32
Journal Article
Journal of cosmology and astroparticle physics, ISSN 1475-7516, 05/2019, Volume 2019, Issue 5, pp. 52 - 52
A light scalar degree of freedom, as the one possibly responsible for the accelerated expansion of the Universe, could leave observable traces in the inspiral... 
General Relativity and Quantum Cosmology | High Energy Physics - Phenomenology | Astrophysics | Cosmology and Extra-Galactic Astrophysics | High Energy Physics - Theory | Physics
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 08/2013, Volume 2013, Issue 8, pp. 25 - 25
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 05/2017, Volume 2017, Issue 5, pp. 33 - 33
Journal Article
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 10/2019, Volume 2019, Issue 10, pp. 72 - 72
We study the decay of gravitational waves into dark energy fluctuations pi, taking into account the large occupation numbers. We describe dark energy using the... 
modified gravity | dark energy theory | gravitational waves / theory | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 02/2019, Volume 2019, Issue 2, pp. 36 - 36
We show that theories of mimetic gravity can be viewed as degenerate higher-order scalar-tensor (DHOST) theories that admit an extra local (gauge) symmetry in... 
Cosmological perturbation theory | Dark energy theory | Modified gravity | modified gravity | dark energy theory | cosmological perturbation theory | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS
Journal Article
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 12/2019, Volume 2019, Issue 12, pp. 11 - 11
We introduce k-evolution, a relativistic N-body code based on gevolution, which includes clustering dark energy among its cosmological components. To describe... 
cosmological simulations | modified gravity | power spectrum | ASTRONOMY & ASTROPHYSICS | dark energy theory | SIMULATIONS | PHYSICS, PARTICLES & FIELDS
Journal Article
by Amendola, Luca and Appleby, Stephen and Avgoustidis, Anastasios and Bacon, David and Baker, Tessa and Baldi, Marco and Bartolo, Nicola and Blanchard, Alain and Bonvin, Camille and Borgani, Stefano and Branchini, Enzo and Burrage, Clare and Camera, Stefano and Carbone, Carmelita and Casarini, Luciano and Cropper, Mark and de Rham, Claudia and Dietrich, Jörg P and Di Porto, Cinzia and Durrer, Ruth and Ealet, Anne and Ferreira, Pedro G and Finelli, Fabio and García-Bellido, Juan and Giannantonio, Tommaso and Guzzo, Luigi and Heavens, Alan and Heisenberg, Lavinia and Heymans, Catherine and Hoekstra, Henk and Hollenstein, Lukas and Holmes, Rory and Hwang, Zhiqi and Jahnke, Knud and Kitching, Thomas D and Koivisto, Tomi and Kunz, Martin and La Vacca, Giuseppe and Linder, Eric and March, Marisa and Marra, Valerio and Martins, Carlos and Majerotto, Elisabetta and Markovic, Dida and Marsh, David and Marulli, Federico and Massey, Richard and Mellier, Yannick and Montanari, Francesco and Mota, David F and Nunes, Nelson J and Percival, Will and Pettorino, Valeria and Porciani, Cristiano and Quercellini, Claudia and Read, Justin and Rinaldi, Massimiliano and Sapone, Domenico and Sawicki, Ignacy and Scaramella, Roberto and Skordis, Constantinos and Simpson, Fergus and Taylor, Andy and Thomas, Shaun and Trotta, Roberto and Verde, Licia and Vernizzi, Filippo and Vollmer, Adrian and Wang, Yun and Weller, Jochen and Zlosnik, Tom and Euclid Theory Working Grp and Euclid Theory Working Group and The Euclid Theory Working Group and Case Western Reserve Univ., Cleveland, OH (United States)
Living Reviews in Relativity, ISSN 2367-3613, 12/2018, Volume 21, Issue 1, pp. 1 - 345
Journal Article