Modified Dispersion Relations from the Renormalization Group of Gravity

Abstract

We show that the running of gravitational couplings, together with a suitable identification of the renormalization group scale can give rise to modified dispersion relations for massive particles. This result seems to be compatible with both the frameworks of effective field theory with Lorentz invariance violation and deformed special relativity. The phenomenological consequences depend on which of the frameworks is assumed. We discuss the nature and strength of the available constraints for both cases and show that in the case of Lorentz invariance violation, the theory would be strongly constrained.

revtex4, 9 pages, updated to match published version

References in corpus (3)

• Renormalization group improved gravitational actions: a Brans-Dicke approach
• Fixed points of quantum gravity in extra dimensions
• Fixed points of quantum gravity in higher dimensions

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