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A new look at the Dirac quantization condition
European Physical Journal C: Particles and Fields, 2023 The angular momentum of any quantum system should be unambiguously quantized. We show that such a quantization fails for a pure Dirac monopole due to a previously overlooked field angular momentum from the monopole-electric charge system coming from the ...
Michael Dunia +2 more
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Angular momentum loss in gravitational scattering, radiation reaction, and the Bondi gauge ambiguity
Physics 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
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Orbital Angular Momentum Microlaser [PDF]
Conference on Lasers and Electro-Optics, 2016 Microlasers with a twist Structured light, in the form of helical wavefronts, provides an additional degree of freedom to encode information for optical communications. Creating light beams with the desired amount of optical angular momentum, or twist, has usually been achieved with bulk optic devices. Miao et al.
Pei, Miao +6 more
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Rotation of electromagnetic fields and the nature of optical angular momentum [PDF]
, 2010 The association of spin and orbital angular momenta of light with its polarization and helical phase fronts is now well established. The problems in linking this with electromagnetic theory, as expressed in Maxwell's equations, are rather less well known.
Stephen M. Barnetta B +2 more
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Stratosphere-troposphere exchange: An angular momentum perspective [PDF]
, 2007 The exchange of axial angular momentum (AM) between stratosphere and troposphere forms an important part of stratosphere–troposphere exchange (STE). Data are used to quantify the related fluxes through an idealized tropopause for specific flux events ...
Egger, Joseph +3 more
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More on Difference between Angular Momentum and Pseudo-Angular Momentum
, 2023 We extend the discussion on the difference between angular momentum and pseudo-angular momentum in field theory. We show that the often quoted expressions in [Phys.Rev.B 103, L100409 (2021)] only apply to a non-linear system, and derive the correct rotation symmetry and the corresponding angular momentum for a linear elastic system governed by Navier ...
Dai, Qi +3 more
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International 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
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Physics 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
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Transverse spin sum rule of the proton
Physics 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
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Spin current driven by ultrafast magnetization of FeRh
Nature 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
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