Dilatonic effect in double field theory cosmology

Liu, Yang

Abstract

In this article we discuss some aspects of double field theory cosmology with an emphasis on the role played by the dilaton. The cosmological solutions of double field theory equations of motion after coupling a shifted dilaton to them are investigated. The equations of motion for a constant shifted dilaton and a constant usual dilaton in an FRW universe are obtained. The solutions of these equations are obtained in both the supergravity frame and in the winding frame. We also consider three possible dark energy candidates in a 4D universe using double field theory cosmology and find some basic conditions which the three dark energy candidates should satisfy. We consider the results for a more general potential of shifted dilaton as well.

Citation

Liu, Y. (2022). Dilatonic effect in double field theory cosmology. General Relativity and Gravitation, 54(2), Article 18. https://doi.org/10.1007/s10714-022-02898-4

• Journal Article Type: Article
• Acceptance Date: Jan 4, 2022
• Online Publication Date: Feb 1, 2022
• Publication Date: 2022-02
• Deposit Date: Feb 7, 2022
• Publicly Available Date: Feb 7, 2022
• Journal: General Relativity and Gravitation
• Print ISSN: 0001-7701
• Electronic ISSN: 1572-9532
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 54
• Issue: 2
• Article Number: 18
• DOI: https://doi.org/10.1007/s10714-022-02898-4
• Keywords: Physics and Astronomy (miscellaneous)
• Public URL: https://nottingham-repository.worktribe.com/output/7408819
• Publisher URL: https://link.springer.com/article/10.1007/s10714-022-02898-4