Results 31 to 40 of about 274,936 (332)

Poincare Invariant Algebra From Instant to Light-Front Quantization [PDF]

, 2001
We present the Poincare algebra interpolating between instant and light-front time quantizations. The angular momentum operators satisfying SU(2) algebra are constructed in an arbitrary interpolation angle and shown to be identical to the ordinary ...
A. Harindranath, A. Harindranath, A. Harindranath, B.D. Keister, C.-R. Ji, C.-R. Ji, C.-R. Ji, C.-R. Ji, C.-R. Ji, C.-R. Ji, Chad Mitchell, Chueng-Ryong Ji, D. Mustaki, D.G. Robertson, E. Gubankova, F. Cardarelli, F. Cardarelli, F. Cardarelli, F. Schlumpf, G. McCartor, G. West, H. Leutwyler, H. Leutwyler, H.-M. Choi, H.-M. Choi, H.-M. Choi, H.-M. Choi, H.-M. Choi, H.-M. Choi, H.-M. Choi, H.C. Pauli, H.C. Pauli, H.M. Choi, H.M. Choi, H.M. Choi, J. Jersak, J.D. Bjorken, K. Hornbostel, L.Ya. Glozman, M.V. Terent’ev, P.A.M. Dirac, P.J. Steinhardt, P.L. Chung, R.F. Wagenbrunn, R.J. Perry, R.J. Perry, S. Fubini, S. Godfrey, S. J. Brodsky, S. Weinberg, S.D. Drell, S.D. Drell, S.D. Drell, S.J. Brodsky, S.J. Brodsky, T. Huang, V.B. Berestetsky, V.B. Berestetsky, W. Jaus, W. Jaus, W. Jaus, Z. Dziembowsky, Z. Dziembowsky   +62 more
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Hanbury Brown and Twiss Interferometry with Twisted Light [PDF]

, 2015
The rich physics exhibited by random optical wave fields permitted Hanbury Brown and Twiss to unveil fundamental aspects of light. Furthermore, it has been recognized that optical vortices are ubiquitous in random light and that the phase distribution ...
Boyd, Robert W., Cross, Robert M., Magana-Loaiza, Omar S., Mirhosseini, Mohammad, Rafsanjani, Seyed Mohammad Hashemi   +4 more
core   +5 more sources

Magnetization control by angular momentum transfer from surface acoustic wave to ferromagnetic spin moments

Nature Communications, 2021
Conversion of an external angular momentum, for example, from mechanical rotation or light into ferromagnetic moment has a long history. Here, Sasaki et al.
R. Sasaki, Y. Nii, Y. Onose
doaj   +1 more source

Twisted-light-induced intersubband transitions in quantum wells at normal incidence [PDF]

, 2013
We examine theoretically the intersubband transitions induced by laser beams of light with orbital angular momentum (twisted light) in semiconductor quantum wells at normal incidence. These transitions become possible in the absence of gratings thanks to
Quinteiro, G. F., Sbierski, B., Tamborenea, P. I.   +2 more
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Angular momentum decomposition of nonparaxial light beams

Optics Express, 2010
The total angular momentum per unit length of a general non-paraxial beam is decomposed into an orbital component associated with the spiral spectrum at the far field and a component concerning the balance between right- and left-handed circular-polarization content of the angular spectrum. Expressions for the linear momentum and energy per unit length
R, Martínez-Herrero, P M, Mejías
openaire   +2 more sources

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, Gregory A. Vilkovisky   +1 more
doaj   +1 more source

Transferring orbital and spin angular momenta of light to atoms

, 2010
Light beams carrying orbital angular momentum, such as Laguerre-Gaussian beams, give rise to the violation of the standard dipolar selection rules during the interaction with matter yielding, in general, an exchange of angular momentum larger than hbar ...
, A Benseny, A Picón, Christov I P, Cohen-Tannoudji C, Cohen-Tannoudji C, Faisal F H M, G F Calvo, Holland P R, J Mompart, J R Vázquez de Aldana, Klimov V V Bloch D Ducloy M Rios Leite J R, L Plaja, L Roso, Lai X Y, Lai X Y   +15 more
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Angular momentum of light

Journal of Modern Optics, 2005
By means of the Helmholtz theorem on the decomposition of vector fields, the angular momentum of the classical electromagnetic field is decomposed, in a general and manifestly gauge invariant manner, into a spin component and an orbital component. The method is applied to linearly and circularly polarized plane waves in their classical and quantum ...
openaire   +3 more sources

A decomposition of light’s spin angular momentum density [PDF]

Light: Science & Applications
AbstractLight carries intrinsic spin angular momentum (SAM) when the electric or magnetic field vector rotates over time. A familiar vector equation calculates the direction of light’s SAM density using the right-hand rule with reference to the electric and magnetic polarisation ellipses.
Alex J. Vernon, Sebastian Golat, Claire Rigouzzo, Eugene A. Lim, Francisco J. Rodríguez-Fortuño   +4 more
openaire   +4 more sources

Transverse angular momentum of photons

, 2010
We develop the quantum theory of transverse angular momentum of light beams. The theory applies to paraxial and quasi-paraxial photon beams in vacuum, and reproduces the known results for classical beams when applied to coherent states of the field. Both
A. E. Siegman, Andrea Aiello, Christoph Marquardt, Gerd Leuchs, L. Mandel   +4 more
core   +1 more source