Extra dimensions and Lorentz invariance violation

Baukh, Viktor and Zhuk, Alexander and Kahniashvili, Tina (2007) Extra dimensions and Lorentz invariance violation. Physical Review D, 76.


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We consider an effective model of photon interaction with a scalar field corresponding to conformal excitations of the internal space (geometrical moduli/gravexcitons). We demonstrate that this interaction results in a modified dispersion relation for photons, and, consequently, the photon group velocity depends on the energy implying the propagation time-delay effect. We suggest the use of the experimental bounds of the time delay of gamma-ray burst photon propagation as an additional constraint for the gravexciton parameters.

Item Type: Article
Subjects: Q Science > QC Physics
Depositing User: Prof. Tina Kahniashvili
Date Deposited: 29 Jan 2014 19:48
Last Modified: 27 Mar 2015 07:02
URI: http://eprints.iliauni.edu.ge/id/eprint/727

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