Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Armen G Hayrapetyan"'
Publikováno v:
New Journal of Physics, Vol 19, Iss 10, p 105002 (2017)
We study the impact of a spatially homogeneous yet non-stationary dielectric permittivity on the dynamical and spectral properties of light. Our choice of potential is motivated by the interest in ${ \mathcal P }{ \mathcal T }$ -symmetric systems as
Externí odkaz:
https://doaj.org/article/210be308292d4eb686f078ef32016de6
Publikováno v:
New Journal of Physics, Vol 17, Iss 8, p 082002 (2015)
We report on the possibility of diffracting electrons from light waves traveling inside a dielectric medium. We show that, in the frame of reference which moves with the group velocity of light, the traveling wave acts as a stationary diffraction gra
Externí odkaz:
https://doaj.org/article/a1486c6da6be4aa4a7712b3d2d874a28
Publikováno v:
Physical Review Letters
A new Bateman-Hillion solution to the Dirac equation for a relativistic Gaussian electron beam taking explicit account of the $4$-position of the beam waist is presented. This solution has a pure Gaussian form in the paraxial limit but beyond it cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fefaa2d8dd2e94d922c0e1b247b65bea
http://arxiv.org/abs/1812.04957
http://arxiv.org/abs/1812.04957
Electromagnetic wave propagation in spatially homogeneous yet smoothly time-varying dielectric media
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 178:158-166
We explore the propagation and transformation of electromagnetic waves through spatially homogeneous yet smoothly time-dependent media within the framework of classical electrodynamics. By modelling the smooth transition, occurring during a finite pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dd71959ee69bbe5e5104e177f89aaa0
https://doi.org/10.1016/j.jqsrt.2015.12.007
https://doi.org/10.1016/j.jqsrt.2015.12.007
Publikováno v:
Physical Review Letters
We present a relativistic description of electron vortex beams in a homogeneous magnetic field. Including spin from the beginning reveals that spin-polarized electron vortex beams have a complicated azimuthal current structure, containing small rings
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f28206ee496859d0c03f87e1cc8f207
https://doi.org/10.1103/physrevlett.119.030401
https://doi.org/10.1103/physrevlett.119.030401
Publikováno v:
Annals of Physics. 333:47-65
The propagation of sound through a spatially homogeneous but non-stationary medium is investigated within the framework of fluid dynamics. For a non-vortical fluid, especially, a generalized wave equation is derived for the (scalar) potential of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f9f22c5eba298a5583af76880d9c01f
https://doi.org/10.1016/j.aop.2013.02.014
https://doi.org/10.1016/j.aop.2013.02.014
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 268:2539-2543
The possibility of high-energy neutron diffraction in a crystal is shown by applying the solution of time-dependent Schrodinger equation for a neutron in the field of a standing laser wave. The scattering picture is examined within the framework of n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f81180be52790f554e9e7ebd53aa9ef3
https://doi.org/10.1016/j.nimb.2010.05.052
https://doi.org/10.1016/j.nimb.2010.05.052
Publikováno v:
Modern Physics Letters B. 24:1951-1961
Transformation (reflection and transmission) of sound and electromagnetic waves are considered in non-stationary media, properties of which abruptly change in time. Reflection and transmission coefficients for both amplitudes and intensities of sound
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ef91ced83fcad0f9e86c23eda60a003
https://doi.org/10.1142/s021798491002433x
https://doi.org/10.1142/s021798491002433x
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 268:2366-2370
The diffraction of neutrons is considered in crystals under the influence of a standing sound wave. The scattering probability is calculated for the elastic neutron–crystal interaction, whereas the neutron-standing sound wave interaction can be eit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbd40f7e1c726385832a087a58501ea2
https://doi.org/10.1016/j.nimb.2010.04.005
https://doi.org/10.1016/j.nimb.2010.04.005
Publikováno v:
Physics of Atomic Nuclei. 73:478-484
For the first time the high-energy neutrons scattering in a crystal is considered under the influence of an external laser wave field. The process is inelastic with respect to the laser wave and at the same time it is elastic with respect to a crysta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::566a190a6dcee7d23481c5d37357eea2
https://doi.org/10.1134/s1063778810030099
https://doi.org/10.1134/s1063778810030099