2007/04/30 by Viktor Baukh, Alexander Zhuk, Tina Kahniashvili · 11 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Classical mechanics #Cosmology and Gravitation Theories #Dispersion relation #Geometry #Lorentz covariance #Lorentz transformation #Mathematics #Noncommutative and Quantum Gravity Theories #Photon #Physics #Quantum electrodynamics #Quantum mechanics #Scalar (mathematics) #Scalar field #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.76.027502
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 76(2) (American Physical Society) · RevTex, 5 pages, references added and minor changes. Corrected typos in title
openalex publication_date 2007/07/16 · arxiv created 2007/11/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.