Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Hayrapetyan, Armen"'
Autor:
Akopov, Arkadi, Nazaryan, Liana, Nahatakyan, Davit, Hayrapetyan, Armen, Muradyan, Hakob, Matikyan, Hasmik
Publikováno v:
Материалы по археологии и истории античного и средневекового Причерноморья, Iss 15, Pp 736-744 (2023)
In 451, after the Ecumenical Council of Chalcedon, Chalcedonism spread in Armenia, especially in Tayk. With its spread, Georgian penetrated there having an impact on the historic and cultural life and the ethnic image of the region. A part of the Arm
Externí odkaz:
https://doaj.org/article/341ee8dc3e0b456b872ef9d8d3d8200d
Publikováno v:
Phys. Rev. Lett. 126, 134803 (2021)
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:
http://arxiv.org/abs/1812.04957
Publikováno v:
Phys. Rev. Lett. 119, 030401 (2017)
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:
http://arxiv.org/abs/1702.05271
Electromagnetic wave propagation in spatially homogeneous yet smoothly time-varying dielectric media
Autor:
Hayrapetyan, Armen G., Götte, Jörg B., Grigoryan, Karen K., Fritzsche, Stephan, Petrosyan, Rubik G.
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:
http://arxiv.org/abs/1511.05824
Publikováno v:
New J. Phys. 19, 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 PT-symmetric systems as an extension of quantum mecha
Externí odkaz:
http://arxiv.org/abs/1503.04720
Autor:
Matula, Oliver, Hayrapetyan, Armen G., Serbo, Valeriy G., Surzhykov, Andrey, Fritzsche, Stephan
Recent advances in the production of twisted electron beams with a subnanometer spot size offer unique opportunities to explore the role of orbital angular momentum (OAM) in basic atomic processes. In the present work, we address one of these process
Externí odkaz:
http://arxiv.org/abs/1401.1646
Autor:
Matula, Oliver, Hayrapetyan, Armen G, Serbo, Valeriy G, Surzhykov, Andrey, Fritzsche, Stephan
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 46 (2013) 205002
We investigate the angular distribution of electrons that are emitted in the ionization of hydrogen-like ions by twisted photons. Analysis is performed based on the first-order perturbation theory and the non-relativistic Schr\"odinger equation. Spec
Externí odkaz:
http://arxiv.org/abs/1306.3878
Publikováno v:
Eur. Phys. J. D (2013) 67: 167
We study Bessel beams of two-level atoms that are driven by a linearly polarized laser field. Starting from the Schroedinger equation, we determine the states of two-level atoms in a plane-wave field respecting propagation directions both of the atom
Externí odkaz:
http://arxiv.org/abs/1305.1158
Publikováno v:
Phys. Scr. 84, 035008 (2011)
We show that two chosen ensembles of spin states, which are differently prepared but are described by the same density matrix in quantum mechanics, do not fully share the same measurable characteristics. One characteristic on which they differ is sho
Externí odkaz:
http://arxiv.org/abs/1108.6249
Autor:
Balian, Dikran Raffi *, Davtyan, Karapet, Balian, Andre, Grigoryan, Anna, Hayrapetyan, Armen, Davtyan, Hayk
Publikováno v:
In Journal of Clinical Tuberculosis and Other Mycobacterial Diseases August 2017 8:1-5