Graviton Excitations and Lorentz-Violating Gravity with Cosmological Constant

Details Graviton Excitations and Lorentz-Violating Gravity with Cosmological Constant Graviton Excitations and Lorentz-Violating Gravity with Cosmological Constant

2009-03-30

arxiv.org/abs/0903.5207v2

Phys.Lett.B689:112-115,2010

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

10.1016/j.physletb.2010.04.059

Motivated by the interest raised by the problem of Lorenz-symmetry violating gauge theories in connetion with gravity models, this contribution sets out to provide a general method to systematically study the excitation spectrum of gravity actions which include a Lorentz-symmetry breaking Chern-Simons-type action term for the spin connection. A complete set of spin-type operators is found which accounts for the (Lorentz) violation parameter to all orders and graviton propagators are worked out in a number of different situations.

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