### Abstract

We study cosmological solutions in low-energy effective heterotic string theory, which consists of the Einstein gravity with the Gauss-Bonnet term and a dilaton. And there are non-linear self-interaction terms which looks like recently studied in context of "Galileon" cosmology. We study cosmological solutions with the self-interaction term which includes two arbitrary coupling parameter. We examine the time evolution of the solutions and the question of whether the solutions can describe accelerated expansion of our four-dimensional space in the Einstein frame. We found de-Sitter solutions in our four-dimension when these two parameter are related.

Original language | English |
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Title of host publication | Proceedings of the 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 |

Pages | 421-424 |

Number of pages | 4 |

Publication status | Published - 2010 |

Event | 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 - Kyoto Duration: 2010 Sep 21 → 2010 Sep 25 |

### Other

Other | 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 |
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City | Kyoto |

Period | 10/9/21 → 10/9/25 |

### Fingerprint

### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics

### Cite this

*Proceedings of the 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010*(pp. 421-424)

**Accelerating cosmologies in dilatonic einstein-gauss-bonnet gravity in the string frame.** / Maeda, Keiichi; Ohtac, Nobuyoshi; Wakebea, Ryo.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Proceedings of the 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010.*pp. 421-424, 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010, Kyoto, 10/9/21.

}

TY - GEN

T1 - Accelerating cosmologies in dilatonic einstein-gauss-bonnet gravity in the string frame

AU - Maeda, Keiichi

AU - Ohtac, Nobuyoshi

AU - Wakebea, Ryo

PY - 2010

Y1 - 2010

N2 - We study cosmological solutions in low-energy effective heterotic string theory, which consists of the Einstein gravity with the Gauss-Bonnet term and a dilaton. And there are non-linear self-interaction terms which looks like recently studied in context of "Galileon" cosmology. We study cosmological solutions with the self-interaction term which includes two arbitrary coupling parameter. We examine the time evolution of the solutions and the question of whether the solutions can describe accelerated expansion of our four-dimensional space in the Einstein frame. We found de-Sitter solutions in our four-dimension when these two parameter are related.

AB - We study cosmological solutions in low-energy effective heterotic string theory, which consists of the Einstein gravity with the Gauss-Bonnet term and a dilaton. And there are non-linear self-interaction terms which looks like recently studied in context of "Galileon" cosmology. We study cosmological solutions with the self-interaction term which includes two arbitrary coupling parameter. We examine the time evolution of the solutions and the question of whether the solutions can describe accelerated expansion of our four-dimensional space in the Einstein frame. We found de-Sitter solutions in our four-dimension when these two parameter are related.

UR - http://www.scopus.com/inward/record.url?scp=84887499557&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887499557&partnerID=8YFLogxK

M3 - Conference contribution

SP - 421

EP - 424

BT - Proceedings of the 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010

ER -