18 citations · 18 across the 1 of their papers we have counts for
2 papers
hep-th2015★ 18 cited
Primordial non-Gaussianities of gravitational waves beyond Horndeski
Yuji Akita, Tsutomu Kobayashi
We clarify the features of primordial non-Gaussianities of tensor perturbations in Gao's unifying framework of scalar-tensor theories. The general Lagrangian is given in terms of t…
gr-qc2015
Removing Ostrogradski's ghost from cosmological perturbations in gravity
Yuji Akita, Tsutomu Kobayashi
Recently it was argued that gravity with the squire of the Ricci tensor can be stabilized by adding constraints to the theory. This was so far demonstrated for fluctuations on the…