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arXiv · 1008.2615

Lorentz Invariance Violation induced time delays in GRBs in different cosmological models

Marek Biesiada·Aleksandra Piórkowska
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Abstract

Lorentz Invariance Violation (LIV) manifesting itself by energy dependent modification of standard relativistic dispersion relation has recently attracted a considerable attention. Ellis et al. previously investigated the energy dependent time offsets in different energy bands on a sample of gamma ray bursts and, assuming standard cosmological model, they found a weak indication for redshift dependence of time delays suggestive of LIV. Going beyond the $Λ$CDM cosmology we extend this analysis considering also four alternative models of dark energy (quintessence with constant and variable equation of state, Chaplygin gas and brane-world cosmology). It turns out that the effect noticed by Ellis et al. is also present in those models and is the strongest for quintessence with variable equation of state.

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Marek Biesiada, Aleksandra Piórkowska. 2010-08-16. Lorentz Invariance Violation induced time delays in GRBs in different cosmological models. https://doi.org/10.1088/0264-9381%2F26%2F12%2F125007

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