Zobrazeno 1 - 10
of 29
pro vyhledávání: '"I. Breev"'
Autor:
Alexander I. Breev, Dmitry M. Gitman
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 2, Pp 1-10 (2024)
Abstract In spite of the fact that photons do not interact with an external magnetic field unless nonlinearity of QED is taken into account, the latter field may indirectly affect photons in the presence of a charged environment. This opens up an int
Externí odkaz:
https://doaj.org/article/f1e7f1ceec1a41e999fbdcdd10dfdcbf
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 2, Pp 1-16 (2023)
Abstract In the framework of strong-field QED with x-steps, we study vacuum mean values of the current density and energy–momentum tensor of the quantized spinor field placed in the so-called L-constant electric background. The latter background ca
Externí odkaz:
https://doaj.org/article/6b0d8918264148b69d7b93ba17496efd
Autor:
A. I. Breev, A. E. Shabad
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 1, Pp 1-10 (2018)
Abstract We consider two point-like charges in electrostatic interaction within the framework of a nonlinear model, associated with QED, that provides finiteness of their field energy. We find the common field of the two charges in a dipole-like appr
Externí odkaz:
https://doaj.org/article/88684c1c4bde4523b6bd80eb45e9dd11
We address the problem of the electromagnetic radiation produced by charge distributions in the framework of a semiclassical approach proposed in the work by Bagrov, Gitman, Shishmarev and Farias [J. Synchrotron Rad. (2020). 27, 902-911]. In this app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15e56f73518fbe748bfc5cf40aa35ddc
http://arxiv.org/abs/2303.05142
http://arxiv.org/abs/2303.05142
Autor:
Alexander I. Breev, Dmitry M. Gitman
Publikováno v:
The European physical journal plus. 2022. Vol. 137, № 8. P. 968 (1-14)
We consider a model for describing a QED system consisting of a photon beam interacting with quantized charged spinless particles. We restrict ourselves by a photon beam that consists of photons with two different momenta moving in the same direction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c62307526b660f35d8623e8a8f66e081
https://doi.org/10.1140/epjp/s13360-022-03206-4
https://doi.org/10.1140/epjp/s13360-022-03206-4
Autor:
D. M. Gitman, A. I. Breev
Publikováno v:
Journal of experimental and theoretical physics. 2021. Vol. 132, № 6. P. 941-959
We study low-energy massless electronic excitations in a graphene monolayer near a pointlike Coulomb impurity. We assume that such excitations are described by the Dirac model. We construct a family of self-adjoint Hamiltonians corresponding to these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a44f42b73abc937a0459753e59c1067
https://doi.org/10.1134/s1063776121060017
https://doi.org/10.1134/s1063776121060017
Autor:
D. A. Ivanov, A. I. Breev
Publikováno v:
Russian Physics Journal. 62:2169-2179
A generalization of the noncommutative reduction of the relativistic wave equations in external electromagnetic fields admitting functional arbitrariness is proposed. Electromagnetic fields with functional arbitrariness, admitting noncommutative inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::347cab85ff4a23e9c1dc1bc5febfa15c
https://doi.org/10.1007/s11182-020-01963-2
https://doi.org/10.1007/s11182-020-01963-2
Publikováno v:
Physical Review
Physical Review D. 2021. Vol. 104, № 7. P. 076008-1-076008-14
Physical Review D. 2021. Vol. 104, № 7. P. 076008-1-076008-14
A new exactly solvable case in strong-field quantum electrodynamics with a time-dependent external electric field is presented. The corresponding field is given by an analytic function, which is asymmetric (in contrast to Sauter-like electric field)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4177f3757102d2cb9d81c33e6cb0199f
http://arxiv.org/abs/2106.06322
http://arxiv.org/abs/2106.06322
Autor:
Alexander Mintairov, V. I. Smirnov, Alexander N. Smirnov, Yu. A. Guseva, M. M. Kulagina, S. I. Troshkov, Valery Yu. Davydov, Emanuele Pelucchi, A. S. Vlasov, I. Breev, Gediminas Juska, Agnieszka Gocalinska, D. V. Lebedev
GaInP microdisks contained InP/GaInP quantum dots having lateral size ∼150 nm and 1-5 μm−2 were investigated with help of microphotoluminescence technique. Experiments carried out in confocal, time-resolved and low-temperature modes. Comparison
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d531b9530ba41796bbd030c1edd402e
https://hdl.handle.net/10468/11323
https://hdl.handle.net/10468/11323
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Journal of experimental and theoretical physics. 2020. Vol. 130, № 5. P. 711-736
Universidade de São Paulo (USP)
instacron:USP
Journal of experimental and theoretical physics. 2020. Vol. 130, № 5. P. 711-736
We study the problem of the electron excitation spectrum in the presence of point-like and regularized Coulomb impurities in gapped graphene. To this end, we use the Dirac model and in the point-like case theory of self-adjoint extensions of symmetri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f39b5cfb2ae1b4b031a42c489af252ac