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

Keiichi Maeda, Nobuyoshi Ohtac, Ryo Wakebea

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    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
    Title of host publicationProceedings of the 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010
    Pages421-424
    Number of pages4
    Publication statusPublished - 2010
    Event20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 - Kyoto
    Duration: 2010 Sep 212010 Sep 25

    Other

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

    Fingerprint

    strings
    gravitation
    string theory
    cosmology
    interactions
    expansion
    energy

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Cite this

    Maeda, K., Ohtac, N., & Wakebea, R. (2010). Accelerating cosmologies in dilatonic einstein-gauss-bonnet gravity in the string frame. In 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.

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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Maeda, K, Ohtac, N & Wakebea, R 2010, Accelerating cosmologies in dilatonic einstein-gauss-bonnet gravity in the string frame. in 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.
    Maeda K, Ohtac N, Wakebea R. Accelerating cosmologies in dilatonic einstein-gauss-bonnet gravity in the string frame. In Proceedings of the 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010. 2010. p. 421-424
    Maeda, Keiichi ; Ohtac, Nobuyoshi ; Wakebea, Ryo. / Accelerating cosmologies in dilatonic einstein-gauss-bonnet gravity in the string frame. Proceedings of the 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010. 2010. pp. 421-424
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