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We consider a quasi-periodically identified conical spacetime, like the one of a cosmic string or disclination, to investigate nonzero averaged quantum vacuum fluctuations effects on the energy-momentum tensor and induced current density…

High Energy Physics - Theory · Physics 2020-08-26 K. E. L. de Farias , H. F. Santana Mota

The quantum description of an atom with a magnetic quadrupole moment in the presence of a time-dependent magnetic field is analysed. It is shown that the time-dependent magnetic field induces an electric field that interacts with the…

Quantum Physics · Physics 2017-05-24 I. C. Fonseca , K. Bakke

I derive the basic relativistic corrections to the equations of motion of test particles and light rays in the field of a source with active mass $m$, including the phantom mass density that any such source generates when a modification of…

General Relativity and Quantum Cosmology · Physics 2013-11-28 Ll. Bel

The behaviour of the interaction of the induced electric dipole moment of an atom with a uniform magnetic field and a non-uniform electric field are investigated in a rotating reference frame. An interesting aspect of this interaction is…

Quantum Physics · Physics 2019-03-08 K. Bakke , C. Salvador

Due to the nonvanishing average photon population of the squeezed vacuum state, finite corrections to the scattering matrix are obtained. The lowest order contribution to the electron mass shift for a one mode squeezed vacuum state is given…

High Energy Physics - Phenomenology · Physics 2007-05-23 Karl Svozil

General relativistic effects in the weak field approximation are calculated for electromagnetic Laguerre-Gaussian (LG) beams. The current work is an extension of previous work on the precession of a spinning neutral particle in the weak…

General Relativity and Quantum Cosmology · Physics 2018-07-04 James Strohaber

Bulk magnetism in solids is fundamentally quantum mechanical in nature. Yet in many situations, including our everyday encounters with magnetic materials, quantum effects are masked, and it often suffices to think of magnetism in terms of…

Strongly Correlated Electrons · Physics 2009-11-13 N. B. Christensen , H. M. Ronnow , D. F. McMorrow , A. Harrison , T. G. Perring , M. Enderle , R. Coldea , L. P. Regnault , G. Aeppli

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…

Quantum Physics · Physics 2015-05-18 Andrea Aiello , Christoph Marquardt , Gerd Leuchs

The coupling between the spin of a massive Dirac fermion and the angular momentum of the medium, i.e. the gravitomagnetic moment, is shown here to be renormalized by QED interactions at finite temperature. This means that the anomalous…

High Energy Physics - Theory · Physics 2021-06-16 M. Buzzegoli , Dmitri E. Kharzeev

While a plane-wave approximation in high-energy physics works well in a majority of practical cases, it becomes inapplicable for scattering of the vortex particles carrying orbital angular momentum, of Airy beams, of the so-called…

Quantum Physics · Physics 2018-01-23 Dmitry Karlovets

Effects due to fermion-vacuum polarization by an external static magnetic field are considered in a two-dimensional noncompact curved space with a nontrivial topology. An expression for the vacuun angular momentum is obtained. Like the…

High Energy Physics - Theory · Physics 2007-05-23 Yu. A. Sitenko , D. G. Rakityansky

The phenomenon of Anderson localization, occurring in a disordered medium, significantly influences the dynamics of quantum particles. A fascinating manifestation of this is the "quantum boomerang effect" (QBE), observed when a quantum…

Disordered Systems and Neural Networks · Physics 2024-04-26 Santiago Zamora , Lisan M. M. Durão , Flavio Noronha , Tommaso Macrì

We predict unidirectional magnetoresistance effects arising in a bilayer composed of a nonmagnetic metal and a ferromagnetic insulator, whereby both longitudinal and transverse resistances vary when the direction of the applied electric…

Mesoscale and Nanoscale Physics · Physics 2025-03-10 M. Mehraeen , Pengtao Shen , Steven S. -L. Zhang

We investigate the axial vector torsion-spin coupling effects in the framework of the Poincar\'e gauge theory of gravity with the general Yang-Mills type Lagrangian. The dynamical equations for the ``electric'' and ``magnetic'' components…

General Relativity and Quantum Cosmology · Physics 2024-10-01 Mariya Iv. Trukhanova , Pavel Andreev , Yuri N. Obukhov

Angular momentum can be transferred to a trapped Bose-Einstein condensate by distorting its shape with an external rotating field, provided the rotational frequency is larger than a critical frequency fixed by the energy and angular…

Condensed Matter · Physics 2009-10-31 F. Dalfovo , S. Stringari

We study the Magneto-Electric (ME) effect from the viewpoint of the Berry phase connection and quantum adiabatic charge transport (QAPT). The linear response theory for the electronic polarization $\vec{P}_{\rm{el}}$ can be interpreted in…

Strongly Correlated Electrons · Physics 2007-05-23 Ryuichi Shindou , Naoto Nagaosa

The impact of the strongly attractive electromagnetic field of heavy nuclei on electrons in quasi-elastic (e,e') scattering is often accounted for by the effective momentum approximation. This method is a plane wave Born approximation which…

Nuclear Theory · Physics 2011-11-09 Andreas Aste , Dirk Trautmann

In this paper, the Quantum Brownian motion of a point particle induced by the quantum vacuum fluctuations of a real massless scalar field in Einstein universe under Dirichlet and Neumann boundary conditions is studied. Using the Wightman…

General Relativity and Quantum Cosmology · Physics 2024-10-21 E. J. B. Ferreira , H. F. Santana Mota

We consider some possible phenomenological implications of the extended uncertainty principle, which is believed to hold for quantum mechanics in de Sitter spacetime. The relative size of the corrections to the standard results is however…

High Energy Physics - Theory · Physics 2011-04-20 Subir Ghosh , Salvatore Mignemi

We derive the leading quantum corrections to the gravitational potentials in a de Sitter background, due to the vacuum polarization from loops of conformal fields. Our results are valid for arbitrary conformal theories, even strongly…

High Energy Physics - Theory · Physics 2017-01-25 Markus B. Fröb , Enric Verdaguer
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