Spontaneous Breaking of Lorentz-Invariance and Gravitons as Goldstone Particles

Details Spontaneous Breaking of Lorentz-Invariance and Gravitons as Goldstone Particles Spontaneous Breaking of Lorentz-Invariance and Gravitons as Goldstone Particles

2008-08-23

arxiv.org/abs/0808.3181v1

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, 3 figures

Scientific paper

We consider some aspects of spontaneous breaking of Lorentz Invariance in field theories, discussing the possibility that the certain tensor operators may condensate in the ground state in which case the tensor Goldstone particles would appear. We analyze their dynamics and discuss to which extent such a theory could imitate the gravity. We are also interested if the universality of coupling of such `gravitons' with other particles can be achieved in the infrared limit. Then we address the more complicated models when such tensor Goldstones coexist with the usual geometrical gravitons. At the end we examine the properties of possible cosmological scenarios in the case of goldstone gravity coexisting with geometrical gravity.

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