Results 41 to 50 of about 108,496 (179)

Communication between inertial observers with partially correlated reference frames

open access: yes, 2015
In quantum communication protocols the existence of a shared reference frame between two spatially separated parties is normally presumed. However, in many practical situations we are faced with the problem of misaligned reference frames.
Ahmadi, Mehdi   +2 more
core   +1 more source

Lorentz covariance of optical Dirac equation and spinorial photon field

open access: yesNew Journal of Physics, 2021
In a recent paper (2014 New J. Phys. 16 093008) Barnett discussed the so-called optical Dirac equation and referred to the involved wave function as a spinor. But as he claimed explicitly, he did not really associate that wave function with a true spinor.
Xiao-Lu You, Chun-Fang Li
doaj   +1 more source

Lorentz Invariance in Chiral Kinetic Theory

open access: yes, 2014
We show that Lorentz invariance is realized nontrivially in the classical action of a massless spin-$\frac12$ particle with definite helicity. We find that the ordinary Lorentz transformation is modified by a shift orthogonal to the boost vector and the ...
Chen, Jing-Yuan   +4 more
core   +1 more source

Magicity of neutron-rich nuclei within relativistic self-consistent approaches

open access: yesPhysics Letters B, 2016
The formation of new shell gaps in intermediate mass neutron-rich nuclei is investigated within the relativistic Hartree–Fock–Bogoliubov theory, and the role of the Lorentz pseudo-vector and tensor interactions is analyzed.
Jia Jie Li   +3 more
doaj   +1 more source

Quantum Helicity Entropy of Moving Bodies

open access: yes, 2007
Lorentz transformation of the reduced helicity density matrix for a massive spin 1/2 particle is investigated in the framework of relativistic quantum information theory for the first time. The corresponding helicity entropy is calculated, which shows no
Adesso G   +12 more
core   +1 more source

Why do spacecraft always experience a black-out area that disrupts communications when they return to Earth?

open access: yesScienceOpen Research
In this paper, Lorentz factor and Lorentz transformations are modified based on the new aether theory, and the blackout which leads to communication interruption of high-speed moving objects is analyzed by using the modified Lorentz electromagnetic field
Jian’an Wang
doaj   +1 more source

Dressed vs. pairwise states, and the geometric phase of monopoles and charges

open access: yesJournal of High Energy Physics, 2023
We construct the Faddeev-Kulish dressed multiparticle states of electrically and magnetically charged particles, incorporating the effects of real and virtual soft photons. We calculate the properties of such dressed states under Lorentz transformations,
Csaba Csáki   +4 more
doaj   +1 more source

Field-dependent quantum gauge transformation

open access: yes, 2014
In this paper we generalize the quantum gauge transformation of Maxwell theory obtained through gaugeon formalism. The generalization is made by making the bosonic transformation parameter field-dependent.
Upadhyay, Sudhaker
core   +1 more source

Relativity in cosmologically preferred frame and the UHECR paradox

open access: yesBibechana, 2014
The Greisen-Zatsepin-Kuzmin (GZK) cutoff (5 × 1019eV) of special relativity in the observed ultra high energy cosmic rays (UHECR) spectrum is one of the most puzzling paradoxes in physics.
Saroj Nepal
doaj   +3 more sources

Derivation of the Lorentz Transformations for Three-Dimensional Relative Motion Between Inertial Frames of Reference

open access: yesAdvances in Mathematical Physics
Lorentz transformations are central to relativistic mechanics, explaining phenomena such as the mass–energy relationship, spatial contraction, momentum transformation, velocity addition, and the geometric structure of Minkowski space-time.
Chandra Bahadur Khadka
doaj   +1 more source

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