Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-01-29
Phys.Lett.B698:403-407,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, no figures
Scientific paper
10.1016/j.physletb.2011.03.029
We propose an orbifolded, warped, extra dimension scenario in which the visible brane is not parallel to the hidden brane. This leads automatically to Lorentz violation in the visible, four dimensional world. The background solution to the Einstein equations is a function of a parameter that can be identified with the amount of 'tilting' of the brane. The cosmological constant is found to coincide with the classic Randall-Sundrum value to first order in this tilt. Lorentz violating effects induced in the Standard Model are considered. We find that the strongest constraint on the tilt comes from determinations of the electron-proton mass ratio in six quasar spectra (four optical and two radio). Measurements of a third radio source could improve this by an order of magnitude.
Hernandez Daniel
Sher Marc
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