Probing Lorentz Invariance Violation with Absorption of Astrophysical γ-Rays by Solar Photons [PDF]
Astrophysical JournalWe compute in detail the absorption optical depth for astrophysical γ-ray photons interacting with solar photons to produce electron–positron pairs.
Justin D. Finke, P. Patel
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Lorentz invariance violation and the CPT -odd electromagnetic response of a tilted anisotropic Weyl semimetal [PDF]
Physical Review D, 2023 We derive the electromagnetic response of a particular fermionic sector in the minimal QED contribution to the Standard Model Extension (SME), which can be physically realized in terms of a model describing a tilted and anisotropic Weyl semimetal (WSM ...
Andr'es G'omez +3 more
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Testing effects of Lorentz invariance violation in the propagation of astroparticles with the Pierre Auger Observatory [PDF]
, 2021 Lorentz invariance violation (LIV) is often described by dispersion relations of the form $E_i^2=m_i^2+p_i^2+\delta_{i,n} E^{2+n}$ with delta different based on particle type $i$, with energy $E$, momentum $p$ and rest mass $m$.
T. P. A. C. P. Abreu +375 more
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How to Violate Lorentz Invariance [PDF]
Progress of Theoretical Physics Supplement, 2006 This article consistes from two parts: the first part is concerned with the subject given in the title and the second part is a tribute to Albert Einstein in the occasion of WYP2005 celebrating his Miracle year, which is given in the Appendix. There are two ways to violate the Lorentz Symmetry of our 4-dimensional space-time; one is to violate the ...
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Extra dimensions and Lorentz invariance violation [PDF]
Physical Review D, 2007 We consider effective model where photons interact with 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 ...
Baukh, Viktor +2 more
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Modified Dispersion Relations from the Renormalization Group of Gravity [PDF]
, 2006 We show that the running of gravitational couplings, together with a suitable identification of the renormalization group scale can give rise to modified dispersion relations for massive particles.
Amelino-Camelia G +16 more
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Spectra for reactions in astrophysical electromagnetic cascades with Lorentz invariance violation: The vacuum Cherenkov effect [PDF]
Physical Review DLorentz invariance violation is a feature of several quantum gravity models in which Lorentz symmetry is broken at high energies, leading to potential changes in particle behavior and interactions. In this study, we investigate vacuum Cherenkov radiation,
A. Saveliev +2 more
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Charged Lifshitz black hole and probed Lorentz-violation fermions from holography
Physics Letters B, 2017 We analytically obtain a new charged Lifshitz solution by adding a non-relativistic Maxwell field in Hořava–Lifshitz gravity. The black hole exhibits an anisotropic scaling between space and time (Lifshitz scaling) in the UV limit, while in the IR limit,
Cheng-Jian Luo +2 more
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Lorentz and CPT breaking in gamma-ray burst neutrinos from string theory
Journal of High Energy Physics, 2023 Previous studies on high-energy gamma-ray burst neutrinos from IceCube suggest a neutrino speed variation at the Lorentz violation (LV) scale of ~6.4 × 1017 GeV, with opposite velocity variances between neutrinos and antineutrinos.
Chengyi Li, Bo-Qiang Ma
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Constraints on Lorentz Invariance Violation with Multiwavelength Polarized Astrophysical Sources
Galaxies, 2021 Possible violations of Lorentz invariance (LIV) can produce vacuum birefringence, which results in a frequency-dependent rotation of the polarization plane of linearly polarized light from distant sources.
Qi-Qi Zhou +3 more
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