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The Einstein equations on the 3-brane world

- T. Shiromizu, K. Maeda, M. Sasaki
- Physics
- 22 October 1999

We carefully investigate the gravitational equations of the brane world, in which all the matter forces except gravity are confined on the 3-brane in a 5-dimensional spacetime with $Z_2$ symmetry. We… Expand

Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914.

- M. Sasaki, Teruaki Suyama, Takahiro Tanaka, S. Yokoyama
- PhysicsPhysical review letters
- 28 March 2016

TLDR

A General Analytic Formula for the Spectral Index of the Density Perturbations Produced during Inflation.

- M. Sasaki, E. Stewart
- Physics
- 3 July 1995

During inflation'> vacuum fluctuations on scales less than the Hubble radius in scalar fields with effective masses much less than the Hubble parameter**> are magnified into classical perturbations… Expand

A general proof of the conservation of the curvature perturbation

- D. Lyth, Karim A. Malik, M. Sasaki
- Physics, Mathematics
- 9 November 2004

Without invoking a perturbative expansion, we define the cosmological curvature perturbation, and consider its behaviour assuming that the universe is smooth over a sufficiently large comoving scale.… Expand

Cosmological Perturbation Theory

The linear perturbation theory of spatially homogeneous and isotropic universes is reviewed and reformulated extensively. In the first half of the article, a gauge-invariant formulation of the theory… Expand

The Japanese space gravitational wave antenna—DECIGO

- S. Kawamura, Takashi Nakamura,
+100 authors T. Yoshino - Physics
- 21 April 2006

DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. It aims at detecting various kinds of gravitational waves between 1 mHz and… Expand

The Japanese space gravitational wave antenna: DECIGO

- S. Kawamura, M. Ando,
+142 authors K. Sun - Physics
- 7 May 2011

The objectives of the DECi-hertz Interferometer Gravitational Wave Observatory (DECIGO) are to open a new window of observation for gravitational wave astronomy and to obtain insight into significant… Expand

Primordial black holes—perspectives in gravitational wave astronomy

- M. Sasaki, Teruaki Suyama, Takahiro Tanaka, S. Yokoyama
- Physics
- 16 January 2018

This article reviews current understanding of primordial black holes (PBHs), with particular focus on those massive examples (≳1015 g) which remain at the present epoch, not having evaporated through… Expand

Non-Gaussianity of the primordial perturbation in the curvaton model

- M. Sasaki, J. Valiviita, D. Wands
- Physics
- 27 July 2006

We use the {delta}N formalism to investigate the non-Gaussianity of the primordial curvature perturbation in the curvaton scenario for the origin of structure. We numerically calculate the full… Expand

Gravitational radiation reaction to a particle motion

- Y. Mino, M. Sasaki, Takahiro Tanaka
- Physics
- 10 June 1996

A small mass particle traveling in a curved spacetime is known to trace a background geodesic in the lowest order approximation with respect to the particle mass. In this paper, we discuss the… Expand

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