Loop-generated bounds on changes to the graviton dispersion relation

By C. Burgess, J. M. Cline, Elise Filotas, Joaquim Matias, Guy D. Moore. 2002

136 citations recorded by the source corpus.

We identify the effective theory appropriate to the propagation of massless bulk fields in brane-world scenarios, to show that the dominant low-energy effect of asymmetric warping in the bulk is to modify the dispersion relation of the effective 4-dimensional modes. We show how such changes to the graviton dispersion relation may be bounded through the effects they imply, through loops, for the propagation of standard model particles. We compute these bounds and show that they provide, in some cases, the strongest constraints on nonstandard gravitational dispersions. The bounds obtained in this way are the strongest for the fewest extra dimensions and when the extra-dimensional Planck mass is the smallest. Although the best bounds come for warped 5-D scenarios, for which M5 is O(TeV), even in 4 dimensions the graviton loop can lead to a bound on the graviton speed which is comparable with other constraints.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/86f5257d75de44da47e1a8c360755ead04fb6d93

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Citations in the corpus

Lorentz violation at high energy: Concepts, phenomena, and astrophysical constraints (2005, background): “[13], and an extreme version occurs in the proposal of Ref.”
Modern Tests of Lorentz Invariance (2005, methodology): “Further information on copyright is given at http://relativity.livingreviews.org/About/copyright.html For permission to reproduce the article please contact livrev@aei.mpg.de.”
Quantum-gravity analysis of gamma-ray bursts using wavelets (2002, background): “(1) may be forbidden (e.g. Burgess et al. 2002) by selection rules such as rotational invariance in a preferred frame.”
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The Phantom menaced: Constraints on low-energy effective ghosts (2003, background): “There are also very severe constraints on Lorentz violation within ordinary particle physics [11]; and Lorentz violation in another sector tends to be communicated to ordinary particle physics via graviton loops [12].”
Tests of Lorentz invariance: a 2013 update (2013, background): “For example, semiclassical spin-network calculations in Loop QG [63], non-commutative geometry [64, 65, 66], some brane-world backgrounds [67].”
Analogue Gravity (2005, background): “There are several scenarios for the origin of this breakdown ranging from string theory [216, 109] to brane worlds [54] and loop quantum gravity [135].”