Some interesting features of new massive gravity

Details Some interesting features of new massive gravity Some interesting features of new massive gravity

2011-08-03

arxiv.org/abs/1108.0889v1

Physics

High Energy Physics

High Energy Physics - Theory

Submitted to Classical and Quantum Gravity

Scientific paper

A proof that new massive gravity - the massive 3D gravity model proposed by Bergshoeff, Hohm and Townsend (BHT) - is the only unitary system at the tree level that can be constructed by augmenting planar gravity through the curvature-squared terms, is presented. Two interesting gravitational properties of the BHT model, namely, time dilation and time delay, which have no counterpart in the usual Einstein 3D gravity, are analyzed as well.

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