Lifshitz scaling in CPT-even Lorentz-violating electrodynamics and GRB time delay
Departamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, João Pessoa, Paraíba, Brazil
2 Instituto Federal de Educação, Ciência e Tecnologia do Sertão Pernambucano - campus Salgueiro, 56000-000, Salgueiro, Pernambuco, Brazil
3 Departamento de Física, Universidade Federal de Campina Grande, Caixa Postal 10071, 58429-900, Campina Grande, Paraíba, Brazil
Accepted: 12 February 2021
Published online: 24 February 2021
In this work, we consider the Hořava–Lifshitz scaling to rewrite higher-order derivatives in Lorentz-violating CPT-even electrodynamics. The possibility of the Lorentz invariance violation being originally suppressed by the quantum gravity energy scale may be indeed circumvented in a scenario with anisotropy between space and time above certain intermediate energy scale . To test the model, we have used observational results of a cosmological time delay between high and low-energy photons from gamma-ray bursts (GRB090510) event. For specific values of the Lifshitz critical exponent, we have found interesting lower bounds on the values of .
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021