More about spontaneous Lorentz-violation and infrared modification of gravity

Abstract

We consider a model with Lorentz-violating vector field condensates, in which dispersion laws of all perturbations, including tensor modes, undergo non-trivial modification in the infrared. The model is free of ghosts and tachyons at high 3-momenta. At low 3-momenta there are ghosts, and at even lower 3-momenta there exist tachyons. Still, with appropriate choice of parameters, the model is phenomenologically acceptable. Beyond a certain large distance scale and even larger time scale, the gravity of a static source changes from that of General Relativity to that of van Dam--Veltman--Zakharov limit of the Fierz--Pauli theory. Yet the late time cosmological evolution is always determined by the standard Friedmann equation, modulo small correction to the ``cosmological Planck mass'', so the modification of gravity cannot by itself explain the accelerated expansion of the Universe. We argue that the latter property is generic in a wide class of models with condensates.

15 pages, 1 figure, JHEP3.cls; Added references

References in corpus (10)

• Lorentz-Violating Vector Fields Slow the Universe Down
• Phases of massive gravity
• Constraining the New Aether: Gravitational Cherenkov Radiation
• Massive graviton as a testable cold dark matter candidate
• Lorentz-violating graviton masses: getting around ghosts, low strong coupling scale and VDVZ discontinuity
• Modified Gravity via Spontaneous Symmetry Breaking
• Strong coupling in brane-induced gravity in five dimensions
• Spontaneous Lorentz Violation and the Long-Range Gravitational Preferred-Frame Effect
• Cosmological attractors in massive gravity
• Modified Gravitational Theory as an Alternative to Dark Energy and Dark Matter

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