On M-Theory Embedding of Topologically Massive Gravity

Details On M-Theory Embedding of Topologically Massive Gravity On M-Theory Embedding of Topologically Massive Gravity

2010-01-14

arxiv.org/abs/1001.2349v4

Int.J.Mod.Phys.D19:1197,2010

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, no figures, references added, version appeared in Int.J.Mod.Phys.D

Scientific paper

10.1142/S0218271810017214

We show that topologically massive gravity can be obtained by the consistent Kaluza-Klein reduction from recently constructed seven-dimensional gravity with topological terms. The internal four-manifold should be Einstein with the Pontryagin four-form constantly proportional to the volume form. We also discuss the possible lift of the system to D=11. This enables us to connect the mass parameter \tilde\mu in D=3 to the M5-brane charge. The dimensionless quantity 3/(G\tilde \mu) is discrete and proportional to N, where N is the number of M5-branes.

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