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An explicit form of the magnetic moment tensor operator for non-Dirac particles with rest spin 1/2 and its essential difference from the spin operator are established. Possible consequences of the last fact for the description of the spin…

High Energy Physics - Phenomenology · Physics 2013-04-12 L. M. Slad

The efficient release of magnetic energy in astrophysical plasmas, such as during solar flares, can in principle be achieved through magnetic diffusion, at a rate determined by the associated electric field. However, attempts at measuring…

We discuss the feasibility of detecting magnetic transitions with focused electron vortex probes, suggested by selection rules for the magnetic quantum number. We theoretically estimate the dichroic signal strength in the L$_{2,3}$ edge of…

Quantum Physics · Physics 2017-02-16 Peter Schattschneider , Stefan Löffler , Michael Stöger-Pollach , Johan Verbeeck

Electric dipole moment (EDM) experiments are at the fore-front of search for physics beyond the standard model. The next generation searches promise to improve by several orders of magnitude the current EDM sensitivity levels.

High Energy Physics - Experiment · Physics 2009-10-16 Yannis K. Semertzidis

The effect of radiation polarization attended with the motion of spinning charge in the magnetic field could be viewed through the classical theory of self-interaction. The quantum expression for the polarization time follows from the…

High Energy Physics - Theory · Physics 2007-05-23 S. L. Lebedev

Strong field ionization by circularly polarized laser fields from initial states with internal orbital momentum has interesting propensity rule: electrons counter-rotating with respect to the laser field can be liberated more easily than…

Atomic Physics · Physics 2015-12-16 Jivesh Kaushal , Felipe Morales , Olga Smirnova

As a fundamental property of the electron, the spin plays a decisive role in the electronic structure of matter from solids to molecules and atoms, e.g. causing magnetism. Yet, despite its importance, the spin dynamics of electrons released…

Vortices in electron beams can manifest several types of topological phenomena, such as the formation of exotic structures or interactions with topologically structured electromagnetic fields. For instance, the wavefunction of an electron…

While the understanding of altermagnetism is still at a very early stage, it is expected to play a role in various fields of condensed matter research, for example spintronics, caloritronics and superconductivity. In the field of optical…

Mesoscale and Nanoscale Physics · Physics 2024-09-04 T. Adamantopoulos , M. Merte , F. Freimuth , D. Go , M. Ležaić , W. Feng , Y. Yao , J. Sinova , L. Šmejkal , S. Blügel , Y. Mokrousov

To manipulate orbital angular momentum (OAM) carried by light beams, there is a great interest in designing various optical elements from the deep-ultraviolet to the microwave. Normally, the OAM variation introduced by optical elements can…

Optics · Physics 2018-10-31 Dengke Zhang , Xue Feng , Yidong Huang

Radiation from high energy electrons in an oriented crystal can be considered in a frame of the quasiclassical operator method which appears to be a most satisfactory approach to the problem. Under some quite generic assumptions the general…

High Energy Physics - Phenomenology · Physics 2016-09-06 V. N. Baier , V. M. Katkov

It is shown that it follows from our model of the electron that its magnetic moment has an anomalous part if the magnetic field energy is taken into account. That means that the magnetic moment of our model of the electron is 1.0000565…

General Physics · Physics 2013-01-21 E. L. Koschmieder

Vortex pattern formation in electron-positron pair creation from vacuum by a time-dependent electric field of linear polarization is analyzed. It is demonstrated that in such scenario the momentum distributions of created particles exhibit…

Quantum Physics · Physics 2023-06-14 A. Bechler , F. Cajiao Vélez , K. Krajewska , J. Z. Kamiński

We present a theoretical study of the inelastic scattering of vortex electrons by a hydrogen atom. In our study, special emphasis is placed on the effects of the Coulomb interaction between a projectile electron and a target atom. To…

Atomic Physics · Physics 2024-12-12 S. Strnat , J. Sommerfeldt , A. K. Sahoo , L. Sharma , A. Surzhykov

We find a modified Bloch equation for the electronic magnetic moment when the magnetic moment explicitly contains a diamagnetic contribution (a magnetic field induced magnetic moment arising from the electronic orbital angular momentum) in…

Soft Condensed Matter · Physics 2009-11-07 B. Segev , Y. B. Band

A direct measurement of the relative orientation between the spin and magnetic moment of the electron seems to be never performed. The kinematical theory of elementary particles developed by the author and the analysis of the expectation…

General Physics · Physics 2007-05-23 Martin Rivas

The existence of magnetic moments of neutrinos points to physics beyond the standard model. Given current upper limits, terrestrial measurements are difficult or completely unfeasible. However, estimates of transition moments can be…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. Domokos , S. Kovesi-Domokos

We deal with the problem of assigning electromagnetic moments to a quasi-stable particle (i.e., a particle with mass located at particle's decay threshold). In this case, an application of a small external electromagnetic field changes the…

High Energy Physics - Phenomenology · Physics 2010-12-23 Tim Ledwig , Vladimir Pascalutsa , Marc Vanderhaeghen

Extremely strong magnetic fields change the vacuum index of refraction. Although this polarization dependent effect is small for typical neutron stars, it is large enough to decouple the polarization states of photons traveling within the…

Astrophysics · Physics 2009-10-31 Jeremy S. Heyl , Nir J. Shaviv

Relativistic electron-positron winds with strong magnetic fields are considered as a source of radiation for cosmological $\gamma$-ray bursters. Such a wind is generated by a millisecond pulsar with a very strong magnetic field. An…

Astrophysics · Physics 2015-06-24 Vladimir V. Usov
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