179 citations · 1k across the 58 of their papers we have counts for
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Effective Field Theory of Black Hole Perturbations in Vector-Tensor Gravity
Katsuki Aoki, Mohammad Ali Gorji, Shinji Mukohyama +2
We formulate the effective field theory (EFT) of vector-tensor gravity for perturbations around an arbitrary background with a vector profile, which can be applied…
Cosmological Perturbation Theory in Metric-Affine Gravity
Katsuki Aoki, Sebastian Bahamonde, Jorge Gigante Valcarcel +1
We formulate cosmological perturbation theory around the spatially curved FLRW background in the context of metric-affine gauge theory of gravity which includes torsion and nonmetr…
Extra-tensor-induced origin for the PTA signal: No primordial black hole production
Mohammad Ali Gorji, Misao Sasaki, Teruaki Suyama
Recently, pulsar timing array (PTA) collaborations announced evidence for an isotropic stochastic gravitational wave (GW) background. The origin of the PTA signal can be astrophysi…
Spin-2 dark matter from inflation
Mohammad Ali Gorji
The seed of dark matter can be generated from light spectator fields during inflation through a similar mechanism that the seed of observed large scale structures are produced from…
Primordial-tensor-induced stochastic gravitational waves
Mohammad Ali Gorji, Misao Sasaki
Cosmological stochastic gravitational waves (GWs) induced by a spectator field are usually expected to have an amplitude very small compared with those generated by the curvature p…