General relativity from three-forms in seven dimensions

Krasnov, Kirill

Abstract

We consider a certain theory of 3-forms in 7 dimensions, and study its dimensional reduction to 4D, compactifying the 7-dimensional manifold on the 3-sphere of a fixed radius. We show that the resulting 4D theory is (Riemannian) General Relativity (GR) in Plebanski formulation, modulo corrections that are negligible for curvatures smaller than Planckian. Possibly the most interesting point of this construction is that the dimensionally reduced theory is GR with a non-zero cosmological constant, and the value of the cosmological constant is directly related to the size of . Realistic values of Λ correspond to of Planck size.

Citation

Krasnov, K. (2017). General relativity from three-forms in seven dimensions. Physics Letters B, 772, https://doi.org/10.1016/j.physletb.2017.06.025

• Journal Article Type: Article
• Acceptance Date: Jun 9, 2017
• Online Publication Date: Jun 29, 2017
• Publication Date: Sep 10, 2017
• Deposit Date: Aug 9, 2017
• Publicly Available Date: Aug 9, 2017
• Journal: Physics Letters B
• Print ISSN: 0370-2693
• Electronic ISSN: 1873-2445
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 772
• DOI: https://doi.org/10.1016/j.physletb.2017.06.025
• Public URL: https://nottingham-repository.worktribe.com/output/882205
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0370269317304926
• Contract Date: Aug 9, 2017