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

Kei Ichi Maeda, Nobuyoshi Ohtac, Ryo Wakebea

Research output: Contribution to conferencePaper

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 languageEnglish
Pages421-424
Number of pages4
Publication statusPublished - 2010
Event20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 - Kyoto, Japan
Duration: 2010 Sep 212010 Sep 25

Other

Other20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010
CountryJapan
CityKyoto
Period10/9/2110/9/25

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Maeda, K. I., Ohtac, N., & Wakebea, R. (2010). Accelerating cosmologies in dilatonic einstein-gauss-bonnet gravity in the string frame. 421-424. Paper presented at 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010, Kyoto, Japan.