56 citations · 136 across the 16 of their papers we have counts for
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CMB spectrum in unified EFT of dark energy: scalar-tensor and vector-tensor theories
Katsuki Aoki, Mohammad Ali Gorji, Takashi Hiramatsu +3
We study the cosmic microwave background (CMB) radiation in the unified description of the effective field theory (EFT) of dark energy that accommodates both scalar-tensor and vect…
Nonlinear gravitational waves in Horndeski gravity: Scalar pulse and memories
Jibril Ben Achour, Mohammad Ali Gorji, Hugo Roussille
We present and analyze a new non-perturbative radiative solution of Horndeski gravity. This exact solution is constructed by a disformal mapping of a seed solution of the shift-sym…
Disformal gravitational waves
Jibril Ben Achour, Mohammad Ali Gorji, Hugo Roussille
Contrary to conformal transformations, disformal transformations can change the principal null directions of a spacetime geometry. Thus, depending on the frame a gravitational wave…