Fermi acceleration under Lorentz invariance violation. Francisco Matheus Duarte; SOUZA, Vitor de.
Abstract: In this paper, the acceleration of particles in astrophysical sources by the Fermi mechanism is revisited under the assumption of Lorentz invariance violation (LIV). We calculate the energy spectrum and the acceleration time of particles leaving the source as a function of the energy beyond which the Lorentz invariance violation becomes relevant. Lorentz invariance violation causes significant changes in the acceleration of particles by the first and second-order Fermi mechanisms. The energy spectrum of particles accelerated by first-order Fermi mechanism under LIV assumption shows a strong suppression for energies above the break. The calculations presented here complete the scenario for LIV searches with astroparticles by showing, for the first time, how the benchmark acceleration mechanisms (Fermi) are modified under LIV assumption.
Journal of Cosmology and Astroparticle Physics
v. 2024, n. 10, p. 029-1-029-15 - Ano: 2024
Fator de Impacto: 5,3
@article={003219987,author = {Francisco Matheus Duarte; SOUZA, Vitor de.},title={Fermi acceleration under Lorentz invariance violation},journal={Journal of Cosmology and Astroparticle Physics},note={v. 2024, n. 10, p. 029-1-029-15},year={2024}}
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Abstract: In this paper, the acceleration of particles in astrophysical sources by the Fermi mechanism is revisited under the assumption of Lorentz invariance violation (LIV). We calculate the energy spectrum and the acceleration time of particles leaving the source as a function of the energy beyond which the Lorentz invariance violation becomes relevant. Lorentz invariance violation causes significant changes in the acceleration of particles by the first and second-order Fermi mechanisms. The energy spectrum of particles accelerated by first-order Fermi mechanism under LIV assumption shows a strong suppression for energies above the break. The calculations presented here complete the scenario for LIV searches with astroparticles by showing, for the first time, how the benchmark acceleration mechanisms (Fermi) are modified under LIV assumption.
@article={003219987,author = {Francisco Matheus Duarte; SOUZA, Vitor de.},title={Fermi acceleration under Lorentz invariance violation},journal={Journal of Cosmology and Astroparticle Physics},note={v. 2024, n. 10, p. 029-1-029-15},year={2024}}