Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Tumakov, D. A."'
The relativistic energies and widths of hydrogen-like ions exposed to the uniform electric field are calculated. The calculations are performed for the ground and lowest excited states using the complex scaling technique in combination with a finite-
Externí odkaz:
http://arxiv.org/abs/2305.07610
Publikováno v:
Phys. Rev. D 107, 116014 (2023)
The problem of spontaneous vacuum decay in low-energy collisions of heavy nuclei is considered beyond the scope of the monopole approximation. The time-dependent Dirac equation is solved in a rotating coordinate system with $z$-axis directed along th
Externí odkaz:
http://arxiv.org/abs/2303.16288
The behavior of a twisted electron colliding with a linearly polarized laser pulse is investigated within relativistic quantum mechanics. In order to better fit the real experimental conditions, we introduce a Gaussian spatial profile for the initial
Externí odkaz:
http://arxiv.org/abs/2206.00110
Autor:
Popov, R. V., Shabaev, V. M., Telnov, D. A., Tupitsyn, I. I., Maltsev, I. A., Kozhedub, Y. S., Bondarev, A. I., Kozin, N. V., Ma, X., Plunien, G., Stöhlker, T., Tumakov, D. A., Zaytsev, V. A.
Publikováno v:
Phys. Rev. D 102, 076005 (2020)
In slow collisions of two bare nuclei with the total charge number larger than the critical value, $Z_{\rm cr} \approx 173$, the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. Detection of the spontaneous
Externí odkaz:
http://arxiv.org/abs/2008.05005
Wavefunction-splitting or mask method, widely used in the non-relativistic calculations of the photoelectron angular distributions, is extended to the relativistic domain within the dipole approximation. Since the closed-form expressions for the rela
Externí odkaz:
http://arxiv.org/abs/2005.13613
Publikováno v:
Phys. Rev. A 102, 023102 (2020)
The behavior of an electron spin interacting with a linearly polarized laser field is analyzed. In contrast to previous considerations of the problem, the initial state of the electron represents a localized wave packet, and a spatial envelope is int
Externí odkaz:
http://arxiv.org/abs/2005.02839
Autor:
Shabaev, V. M., Bondarev, A. I., Glazov, D. A., Kozhedub, Y. S., Maltsev, I. A., Malyshev, A. V., Popov, R. V., Tumakov, D. A., Tupitsyn, I. I.
The current status of tests of quantum electrodynamics with heavy ions is reviewed. The theoretical predictions for the Lamb shift and the hyperfine splitting in heavy ions are compared with available experimental data. Recent achievements and future
Externí odkaz:
http://arxiv.org/abs/1910.01373
Publikováno v:
Phys. Rev. A 100, 023407 (2019)
We calculate two-dimensional photoelectron momentum distributions and energy spectra after multiphoton ionization of Li atoms subject to intense laser fields in one-photon Rabi-flopping regime. The time-dependent Schr\"{o}dinger equation is solved wi
Externí odkaz:
http://arxiv.org/abs/1909.09812
Autor:
Maltsev, I. A., Shabaev, V. M., Popov, R. V., Kozhedub, Y. S., Plunien, G., Ma, X., Stöhlker, Th., Tumakov, D. A.
Publikováno v:
Phys. Rev. Lett. 123, 113401 (2019)
In slow collisions of two bare nuclei with the total charge larger than the critical value $Z_{\rm cr} \approx 173$, the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. Detection of the spontaneous emission
Externí odkaz:
http://arxiv.org/abs/1903.08546
Autor:
Maltsev, I. A.1 (AUTHOR) i.maltsev@spbu.ru, Tumakov, D. A.1,2 (AUTHOR) d.tumakov@spbu.ru, Popov, R. V.1 (AUTHOR), Shabaev, V. M.1 (AUTHOR)
Publikováno v:
Optics & Spectroscopy. Apr2023, Vol. 131 Issue 4, p226-231. 6p.
