Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-01-10
JCAP 0604 (2006) 006
Astronomy and Astrophysics
Astrophysics
16 pages, 4 figures; reference added
Scientific paper
10.1088/1475-7516/2006/04/006
Gamma ray bursts are excellent candidates to constrain physical models which break Lorentz symmetry. We consider deformed dispersion relations which break the boost invariance and lead to an energy-dependent speed of light. In these models, simultaneously emitted photons from cosmological sources reach Earth with a spectral time delay that depends on the symmetry breaking scale. We estimate the possible bounds which can be obtained by comparing the spectral time delays with the time resolution of available telescopes. We discuss the best strategy to reach the strongest bounds. We compute the probability of detecting bursts that improve the current bounds. The results are encouraging. Depending on the model, it is possible to build a detector that within several years will improve the present limits of 0.015 m_pl.
Martínez María Rodríguez
Piran Tsvi
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