### 抄録

To investigate the cosmic no hair conjecture, we numerically analyze 1-dimensional inhomogeneous space-times. The spacetimes we study are to be a plane symmetric and vacuum with a positive cosmological constant. Initially we set the inhomogeneities due to gravitational pulse waves and examine the time evolution of the Riemann invariant ^{(3)}R_{ijkl}
^{ (3)}R^{ijkl} and Weyl curvature C_{μνρ{variant}σ} on each hypersurfaces. We find a temporal growth of the curvature in the interacting regions of waves, but the expansion of the universe later overcomes this effects. Even if we set large Riemann invariant and/or small width scale of inhomogeneity on the initial hypersurface, the nonlinearity of the gravity has little effect and the spacetime results in a flat de-Sitter spacetime.

元の言語 | English |
---|---|

ページ（範囲） | 449-452 |

ページ数 | 4 |

ジャーナル | Vistas in Astronomy |

巻 | 37 |

発行部数 | C |

DOI | |

出版物ステータス | Published - 1993 |

### Fingerprint

### ASJC Scopus subject areas

- Astronomy and Astrophysics

### これを引用

*Vistas in Astronomy*,

*37*(C), 449-452. https://doi.org/10.1016/0083-6656(93)90072-R

**Gravitational waves in expanding universe with cosmological constant.** / Shinkai, Hisa Aki; Maeda, Keiichi.

研究成果: Article

*Vistas in Astronomy*, 巻. 37, 番号 C, pp. 449-452. https://doi.org/10.1016/0083-6656(93)90072-R

}

TY - JOUR

T1 - Gravitational waves in expanding universe with cosmological constant

AU - Shinkai, Hisa Aki

AU - Maeda, Keiichi

PY - 1993

Y1 - 1993

N2 - To investigate the cosmic no hair conjecture, we numerically analyze 1-dimensional inhomogeneous space-times. The spacetimes we study are to be a plane symmetric and vacuum with a positive cosmological constant. Initially we set the inhomogeneities due to gravitational pulse waves and examine the time evolution of the Riemann invariant (3)Rijkl (3)Rijkl and Weyl curvature Cμνρ{variant}σ on each hypersurfaces. We find a temporal growth of the curvature in the interacting regions of waves, but the expansion of the universe later overcomes this effects. Even if we set large Riemann invariant and/or small width scale of inhomogeneity on the initial hypersurface, the nonlinearity of the gravity has little effect and the spacetime results in a flat de-Sitter spacetime.

AB - To investigate the cosmic no hair conjecture, we numerically analyze 1-dimensional inhomogeneous space-times. The spacetimes we study are to be a plane symmetric and vacuum with a positive cosmological constant. Initially we set the inhomogeneities due to gravitational pulse waves and examine the time evolution of the Riemann invariant (3)Rijkl (3)Rijkl and Weyl curvature Cμνρ{variant}σ on each hypersurfaces. We find a temporal growth of the curvature in the interacting regions of waves, but the expansion of the universe later overcomes this effects. Even if we set large Riemann invariant and/or small width scale of inhomogeneity on the initial hypersurface, the nonlinearity of the gravity has little effect and the spacetime results in a flat de-Sitter spacetime.

UR - http://www.scopus.com/inward/record.url?scp=43949174356&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=43949174356&partnerID=8YFLogxK

U2 - 10.1016/0083-6656(93)90072-R

DO - 10.1016/0083-6656(93)90072-R

M3 - Article

AN - SCOPUS:43949174356

VL - 37

SP - 449

EP - 452

JO - New Astronomy Reviews

JF - New Astronomy Reviews

SN - 1387-6473

IS - C

ER -