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20112024
most citedDerivative-dependent metric transformation and physical degrees of freedom

117 citations · 295 across the 15 of their papers we have counts for

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gr-qc2024

Parametrized-Post-Newtonian Test of Black Hole Spacetime for Galactic Center Massive Black Hole Sgr A*: Formulation and Fitting

Hiromi Saida, Sena A. Matsui, Tsutomu T. Takeuchi +4

We have performed a parametrized post-Newtonian (PPN) test of a black hole spacetime using observational data of the star S0-2/S2 orbiting the massive black hole at our galactic ce…

gr-qc2020

Light deflection in Observation: Angle differences between two null geodesics on the de Sitter spacetime with multi-lensing objects

Rio Saitou, Hiromi Saida

We derive angle differences between two null geodesics, propagating from light sources to an observer, on the de Sitter spacetime with multi-lensing objects. Assuming the lensing o…

gr-qc2019★ 1 cited

Stochastic approach to de Sitter instability and eternal inflation

Rio Saitou

We investigate when effective theories of a scalar field on (quasi-)de Sitter background break down through the stochastic formalism. We derive the Fokker-Planck equation leaving t…