Results 81 to 90 of about 37,959 (230)
Aspects of phase-space noncommutative quantum mechanics
Physics Letters B, 2015 In this work some issues in the context of Noncommutative Quantum Mechanics (NCQM) are addressed. The main focus is on finding whether symmetries present in Quantum Mechanics still hold in the phase-space noncommutative version. In particular, the issues
O. Bertolami, P. Leal
doaj +1 more source
Optical cavity tests of Lorentz invariance for the electron
, 2004 A hypothetical violation of Lorentz invariance in the electrons' equation of motion (expressed within the Lorentz-violating extension of the standard model) leads to a change of the geometry of crystals and thus shifts the resonance frequency of an ...
A. Brillet +45 more
core +1 more source
Annalen der Physik, Volume 538, Issue 1, January 2026.The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley +1 more source
Probing Lorentz invariance violation with neutrino factories [PDF]
Journal of Physics G: Nuclear and Particle Physics, 2015 In this article we show the modification in the number of neutrino events ($ _ +\bar _ $) caused by Lorentz Invariant Violation (LIV), $ =5\times 10^{-24}$ and $10^{-23}$, in neutrino oscillation for a neutrino factory at a distance of 7500 km. The momentum of the muons can vary from 10-50 GeV and we consider $2\times 10^{20}$ decays per year. The
openaire +2 more sources
, 2008 We examine what the absorbed spectra of extra-galactic TeV gamma-ray sources, such as blazars, would look like in the presence of Lorentz invariance violation (LIV).
F. A. Aharonian +7 more
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CPT and Lorentz Violations in Neutrino Oscillations [PDF]
, 2001 Tests of Lorentz invariance violation and CPT Violation in neutrino oscillations are discussed. The sensitivity of current and future experiments is presented.Comment: References added and typos corrected, 8 pages, 1 figure, latex209.
Pakvasa, S.
core +2 more sources
Model-independent Constraints on Lorentz Invariance Violation: Implication from Updated Gamma-Ray Burst Observations [PDF]
Astrophysical Journal, 2020 Astrophysical observations provide a unique opportunity to test possible signatures of Lorentz invariance violation (LIV), due to the high energies and long distances involved.
Yu Pan +7 more
semanticscholar +1 more source
Reversal Asymmetry of Reciprocal Metasurface Enables Ultra‐Compact Varifocal Reflective Lens
Laser &Photonics Reviews, Volume 20, Issue 1, 8 January 2026.The possibility of breaking the reversal symmetry of a lens without violating reciprocity is demonstrated. The freedom provided is utilized to realize an ultra‐compact reflective varifocal lens‐doublet based on a flat metasurface lens and a piezoelectric actuated micromirror.
Christopher A. Dirdal +6 more
wiley +1 more source
Neutrino Oscillations from Strings and Other Funny Things [PDF]
, 1997 I will discuss three related unconventional ways to generate neutrino oscillations (1)Equivalence principle violation by the string dilaton field (i2)Violation of Lorentz Invariance and (3) Equivalence principle violation through a non-universal tensor ...
A. Halprin +11 more
core +3 more sources
Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.Abstract We incorporate field line curvature (FLC) scattering into a kinetic ring current model two‐way coupled with a global magnetospheric MHD model to investigate its role in SYM‐H prediction and global magnetospheric dynamics. FLC scattering reduces plasma pressure in regions where the ion gyroradius is comparable to the local FLC radius.
Suk‐Bin Kang +5 more
wiley +1 more source