Results 141 to 150 of about 37,959 (230)
High energy neutrino oscillation at the presence of the Lorentz Invariance Violation
, 2012 Due to quantum gravity fluctuations at the Planck scale, the space-time manifold is no longer continuous, but discretized. As a result the Lorentz symmetry is broken at very high energies. In this article, we study the neutrino oscillation pattern due to
Amelino-Camelia G. +8 more
core +1 more source
Higher-order Lorentz-invariance violation, quantum gravity and fine-tuning
Physics Letters B, 2015 The issue of Lorentz fine-tuning in effective theories containing higher-order operators is studied. To this end, we focus on the Myers–Pospelov extension of QED with dimension-five operators in the photon sector and standard fermions.
Carlos M. Reyes +2 more
doaj +1 more source
, 2004 Local Lorentz invariance violation can be realized by introducing extra tensor fields in the action that couple to matter. If the Lorentz violation is rotationally invariant in some frame, then it is characterized by an ``aether'', i.e.
Jacobson, T., Mattingly, D.
core +2 more sources
Neutrino oscillations and Lorentz invariance violation in a Finslerian geometrical model
European Physical Journal C: Particles and Fields, 2018 Neutrino oscillations are one of the first evidences of physics beyond the Standard Model (SM). Since Lorentz invariance is a SM fundamental symmetry, recently also neutrino physics has been explored to verify this symmetry eventual modification and its ...
Vito Antonelli +2 more
doaj +1 more source
HIGH ENERGY ASTROPHYSICS TESTS OF LORENTZ INVARIANCE VIOLATION [PDF]
International Journal of Modern Physics A, 2005 Observations of the multi-TeV spectra of the Mkn 501 and other nearby BL Lac objects exhibit the high energy cutoffs predicted to be the result of intergalactic annihilation interactions, primarily with IR photons having a flux level as determined by various astronomical observations.
openaire +2 more sources
Lorentz invariance violation and symmetry in Randers–Finsler spaces
Physics Letters B, 2008 Lorentz Invariance violation is a common feature of new physics beyond the standard model. We show that the symmetry of Randers spaces deduces a modified dispersion relation with characteristics of Lorentz Invariance violation. The counterparts of the Lorentz transformation in the Einstein's Special Relativity are presented explicitly.
Chang, Zhe, Li, Xin
openaire +3 more sources
Spectral Lags of 90 Swift Gamma-Ray Bursts and the Constraint on the Lorentz Invariance Violation
The Astrophysical JournalThe arrival times of photons with different energy could be different, even when they are emitted from the same source simultaneously. Such a spectral lag is a common property among high-energy astrophysics phenomena like gamma-ray bursts (GRBs).
Bin Liao, Yuan-Chuan Zou, Wei-Hua Lei
doaj +1 more source
Could the photon dispersion relation be non-linear ?
, 2010 The free photon dispersion relation is a reference quantity for high precision tests of Lorentz Invariance. We first outline theoretical approaches to a conceivable Lorentz Invariance Violation (LIV).
Abbasi +48 more
core +1 more source
Deriving Gauge Symmetry and Spontaneous Lorentz Violation
, 2009 We consider a class of field theories with a four-vector field $A_{\mu}(x)$ in addition to other fields supplied with a global charge symmetry - theories which have partial gauge symmetry in the sense of only imposing it on those terms in the Lagrangian ...
Azatov +19 more
core +2 more sources
, 2014 Low-energy Lorentz-invariant quantities could receive contributions from a fundamental theory producing small Lorentz-violating effects. Within the Lorentz-violating extension of quantum electrodynamics, we investigate, perturbatively, the contributions ...
Moyotl, A. +3 more
core +1 more source