1.2k citations · 2.3k across the 33 of their papers we have counts for
33 papers
Non-relativistic stellar structure in the Fierz--Pauli theory and generic linear massive gravity
Tomoya Tachinami, Yuuiti Sendouda
We study the structure of static spherical stars composed of non-relativistic matter in linear massive gravity with or without the Fierz-Pauli (FP) tuning. Adopting a polytropic eq…
Non-relativistic stellar structure in higher-curvature gravity: systematic construction of solutions to the modified Lane-Emden equations
Shinpei Tonosaki, Tomoya Tachinami, Yuuiti Sendouda
We study the structure of static spherical stars made up of a non-relativistic polytropic fluid in linearized higher-curvature theories of gravity (HCG). We first formulate the mod…
Gravitational-wave polarizations in generic linear massive gravity and generic higher-curvature gravity
Tomoya Tachinami, Shinpei Tonosaki, Yuuiti Sendouda
We study the polarizations of gravitational waves (GWs) in two classes of extended gravity theories. First, we formulate the polarizations in linear massive gravity (MG) with gener…
Constraints on Primordial Black Holes
Bernard Carr, Kazunori Kohri, Yuuiti Sendouda +1
We update the constraints on the fraction of the Universe that may have gone into primordial black holes (PBHs) over the mass range g. Those smaller than…
Non-Fierz-Pauli bimetric theory from quadratic curvature gravity on Einstein manifolds
Yuki Niiyama, Yuya Nakamura, Ryosuke Zaimokuya +2
We show that, in four-dimensional spacetimes with an arbitrary Einstein metric, with and without a cosmological constant, perturbative dynamical degrees of freedom in generic quadr…
A quantisation procedure in the presence of an initial Kasner singularity: primordial gravitational waves from triaxially anisotropic pre-inflation
Yu Furuya, Yuki Niiyama, Yuuiti Sendouda
In this paper, we discuss quantisation of cosmological tensor perturbations in the Kasner-de Sitter space-time as a model of (pre-)inflation. Quantisation in such an anisotropic ba…