Semantic Scholar Open Access 2009 34 sitasi

Cosmic acceleration and crossing of ω=−1 in non-minimal modified Gauss–Bonnet gravity

J. Sadeghi M. Setare A. Banijamali

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Abstrak

Abstract Modified Gauss–Bonnet, i.e., f ( G ) gravity is a possible explanation of dark energy. Late time cosmology for the f ( G ) gravity non-minimally coupled with a free massless scalar field have been investigated in Ref. [S. Nojiri, S.D. Odintsov, P.V. Tretyakov, Phys. Lett. B 651 (2007) 224, arXiv:0704.2520 [hep-th] ; S. Nojiri, S.D. Odintsov, P.V. Tretyakov, Progr. Theor. Phys. Suppl. 172 (2008) 81, arXiv:0710.5232]. In this Letter we generalize the work of Ref. [S. Nojiri, S.D. Odintsov, P.V. Tretyakov, Phys. Lett. B 651 (2007) 224, arXiv:0704.2520 [hep-th] ; S. Nojiri, S.D. Odintsov, P.V. Tretyakov, Progr. Theor. Phys. Suppl. 172 (2008) 81, arXiv:0710.5232 ] by including scalar potential in the matter Lagrangian which is non-minimally coupled with modified Gauss–Bonnet gravity. Also we obtain the conditions for having a much more amazing problem than the acceleration of the universe, i.e. crossing of ω = − 1 , in f ( G ) non-minimally coupled with tachyonic Lagrangian.

Topik & Kata Kunci

Physics

Penulis (3)

J. Sadeghi

M. Setare

A. Banijamali

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APA MLA BibTeX

Sadeghi, J., Setare, M., Banijamali, A. (2009). Cosmic acceleration and crossing of ω=−1 in non-minimal modified Gauss–Bonnet gravity. https://doi.org/10.1016/j.physletb.2009.07.003

Akses Cepat

Lihat di Sumber doi.org/10.1016/j.physletb.2009.07.003

Informasi Jurnal

Tahun Terbit: 2009
Bahasa: en
Total Sitasi: 34×
Sumber Database: Semantic Scholar
DOI: 10.1016/j.physletb.2009.07.003
Akses: Open Access ✓