208 citations · 1.2k across the 28 of their papers we have counts for
6 papers · 1 filter
Gravitational radiation from a particle in circular orbit around a black hole. V. Black-hole absorption and tail corrections
Eric Poisson, Misao Sasaki
A particle of mass moves on a circular orbit of a nonrotating black hole of mass . Under the restrictions and , where is the orbital velocity, we co…
Euclidian Vacuum Mode Functions for a Scalar Field on Open De Sitter Spacetime
Misao Sasaki, Takahiro Tanaka, Kazuhiro Yamamoto
Motivated by recent studies of the one-bubble inflationary universe scenario that predicts a low density, negative curvature universe, we investigate the Euclidean vacuum mode func…
Particle Spectrum Created Through Bubble Nucleation
Kazuhiro Yamamoto, Takahiro Tanaka, Misao Sasaki
Using the multi-dimensional wave function formalism, we investigate the quantum state of a scalar field inside a true vacuum bubble nucleated through false vacuum decay in flat spa…
Gravitational Waves from a Particle Orbiting Around a Rotating Black Holes: Post-Newtonian Expansion
Masaru Shibata, Misao Sasaki, Hideyuki Tagoshi +1
Using the Teukolsky and Sasaki-Nakamura equations for the gravitational perturbation of the Kerr spacetime, we calculate the post-Newtonian expansion of the energy and angular mome…
Quantum State During and after -Symmetric Bubble Nucleation with Gravitaional Effects
Takahiro TANAKA, Misao SASAKI
We extend our previous analysis of the quantum state during and after -symmetric bubble nucleation to the case including gravitational effects. We find that there exists a si…
General Solutions for Tunneling of Scalar Fields with Quartic Potentials in de Sitter Space
Misao Sasaki, Ewan D. Stewart, Takahiro Tanaka
The tunneling rates for scalar fields with quartic potentials in de Sitter space in the limit of no gravitational back reaction are calculated numerically and the results are fitte…