Results 21 to 30 of about 487,334 (328)

Classification of magnetic vortices by angular momentum conservation

open access: yesPhysical Review Research, 2021
Superfluid vortices are quantum excitations carrying a quantized amount of orbital angular momentum in a phase where global symmetry is spontaneously broken.
Kenji Fukushima   +2 more
doaj   +1 more source

Angular momentum loss in gravitational scattering, radiation reaction, and the Bondi gauge ambiguity

open access: yesPhysics Letters B, 2022
Recently, Damour computed the radiation reaction on gravitational scattering as the (linear) response to the angular momentum loss which he found to be of O(G2) in the gravitational constant.
Gabriele Veneziano   +1 more
doaj   +1 more source

A proposed measurement of optical orbital and spin angular momentum and its implications for photon angular momentum

open access: yesPhysics Letters B, 2018
The expression for the total angular momentum carried by a laser optical vortex beam, splits, in the paraxial approximation, into two terms which seem to represent orbital and spin angular momentum respectively.
Elliot Leader
doaj   +1 more source

Angular momentum evolution in laser-plasma accelerators [PDF]

open access: yes, 2013
The transverse properties of an electron beam are characterized by two quantities, the emittance which indicates the electron beam extend in the phase space and the angular momentum which allows for non-planar electron trajectories. Whereas the emittance
Bouteiller, M. Le   +9 more
core   +4 more sources

Transverse spin sum rule of the proton

open access: yesPhysics Letters B, 2020
The transversely-polarized state of a proton with arbitrary momentum is not an eigenstate of transverse angular momentum operator. The latter does not commute with the QCD Hamiltonian.
Xiangdong Ji, Feng Yuan
doaj   +1 more source

Spin current driven by ultrafast magnetization of FeRh

open access: yesNature Communications, 2023
Laser-induced ultrafast demagnetization is an important phenomenon that probes arguably the ultimate limits of the angular momentum dynamics in solid. Unfortunately, many aspects of the dynamics remain unclear except that the demagnetization transfers ...
Kyuhwe Kang   +7 more
doaj   +1 more source

Interaction of spin-orbit angular momentum in the tight focusing of structured light

open access: yesFrontiers in Physics, 2022
As an intrinsic property of light, angular momentum has always been an important research object of light field. In the past few years, the interactions between spin angular momentum and orbital angular momentum in tightly focused structured light have ...
Ji-Xiang Guo   +7 more
doaj   +1 more source

Torque of guided light on an atom near an optical nanofiber [PDF]

open access: yes, 2019
We calculate analytically and numerically the axial orbital and spin torques of guided light on a two-level atom near an optical nanofiber. We show that the generation of these torques is governed by the angular momentum conservation law in the Minkowski
Busch, Thomas, Kien, Fam Le
core   +3 more sources

Parallel axis theorem for free-space electron wavefunctions

open access: yesNew Journal of Physics, 2015
We consider the orbital angular momentum of a free electron vortex moving in a uniform magnetic field. We identify three contributions to this angular momentum: the canonical orbital angular momentum associated with the vortex, the angular momentum of ...
Colin R Greenshields   +2 more
doaj   +1 more source

Special Issue on Novel Insights into Orbital Angular Momentum Beams: From Fundamentals, Devices to Applications

open access: yesApplied Sciences, 2019
It is well-known now that angular momentum carried by elementary particles can be categorized as spin angular momentum (SAM) and orbital angular momentum (OAM) [...]
Yang Yue   +4 more
doaj   +1 more source

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