Spontaneous Lorentz Violation and the Long-Range Gravitational Preferred-Frame Effect

Details Spontaneous Lorentz Violation and the Long-Range Gravitational Preferred-Frame Effect Spontaneous Lorentz Violation and the Long-Range Gravitational Preferred-Frame Effect

2005-01-28

arxiv.org/abs/hep-th/0501223v4

Phys.Lett. B613 (2005) 5-10

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, no figures, revtex4. v4: Replaced to match version to appear in Phys. Lett. B (minor corrections of form)

Scientific paper

10.1016/j.physletb.2005.03.037

Lorentz-violating operators involving Standard Model fields are tightly constrained by experimental data. However, bounds are more model-independent for Lorentz violation appearing in purely gravitational couplings. The spontaneous breaking of Lorentz invariance by the vacuum expectation value of a vector field selects a universal rest frame. This affects the propagation of the graviton, leading to a modification of Newton's law of gravity. We compute the size of the long-range preferred-frame effect in terms of the coefficients of the two-derivative operators in the low-energy effective theory that involves only the graviton and the Goldstone bosons.

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