Results 31 to 40 of about 487,334 (328)

Angular Momentum Spinner

open access: yesInternational Journal of Instrumentation and Control Systems, 2018
An angular momentum spinner includes two or more rotating arms loaded with an adjustable sliding block for each arm and laid symmetrically about a rotating center. Each sliding block is controlled to move along the corresponding rotating arm. Such a spinner can display the conservation of angular momentum vividly and intuitively, and can also serve as ...
Yizong He, Lijuan You
openaire   +1 more source

Angular and Orbital Angular Momenta in the Tight Focus of a Circularly Polarized Optical Vortex

open access: yesPhotonics, 2023
Based on the Richards-Wolf (RW) formalism, we obtain two different exact expressions for the angular momentum (AM) density of light in the focus of an optical vortex with a topological charge n and right circular polarization.
Victor V. Kotlyar   +2 more
doaj   +1 more source

Quark Orbital Angular Momentum

open access: yesEPJ Web of Conferences, 2015
Definitions of orbital angular momentum based on Wigner distributions are used as a framework to discuss the connection between the Ji definition of the quark orbital angular momentum and that of Jaffe and Manohar.
Burkardt Matthias
doaj   +1 more source

Surprises with angular momentum [PDF]

open access: yes, 2002
The physics of angular momentum in even space dimensions can be surprisingly counter-intuitive. Three such suprises, all associated with the properties of supersymmetric rotating objects, are examined: (i) 5D black holes, (ii) Dyonic instantons and (iii)
Townsend, Paul K.
core   +2 more sources

Large Angular Momentum

open access: yesMagnetism
The quantum states of a spin 12 (a qubit) are parametrized by the space CP1∼S2, the Bloch sphere. A spin j for a generic j (a 2j+1-state system) is represented instead by a point in a larger space, CP2j.
Kenichi Konishi, Roberto Menta
doaj   +1 more source

Spin-constrained orbital-angular-momentum control in high-harmonic generation

open access: yesPhysical Review Research, 2019
The interplay between spin and orbital angular momentum in the up-conversion process allows us to control the macroscopic wave front of high harmonics by manipulating the microscopic polarizations of the driving field.
F. Kong   +10 more
doaj   +1 more source

Angular Momentum of Phonons and Einstein-de Haas Effect

open access: yes, 2014
We study angular momentum of phonons in a magnetic crystal. In the presence of a spin-phonon interaction, we obtain a nonzero angular momentum of phonons, which is an odd function of magnetization.
Niu, Qian, Zhang, Lifa
core   +1 more source

Minimum-Uncertainty Angular Wave Packets and Quantized Mean Values [PDF]

open access: yes, 1995
Uncertainty relations between a bounded coordinate operator and a conjugate momentum operator frequently appear in quantum mechanics. We prove that physically reasonable minimum-uncertainty solutions to such relations have quantized expectation values of
A. A. Evett   +39 more
core   +2 more sources

Contribution of Orbital Angular Momentum to the Nucleon Spin

open access: yes, 2017
We have calculated the Orbital Angular Momentum of quarks and gluons in the nucleon. The calculations are carried out in the next to leading order utilizing the so-called valon model.
Arash, Firooz   +3 more
core   +1 more source

A Unified Theory for the Effects of Stellar Perturbations and Galactic Tides on Oort Cloud Comets [PDF]

open access: yes, 2010
We examine the effects of passing field stars on the angular momentum of a nearly radial orbit of an Oort cloud comet bound to the Sun. We derive the probability density function (PDF) of the change in angular momentum from one stellar encounter ...
Benjamin F. Collins   +9 more
core   +2 more sources

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