Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Efimov, Dmitry"'
Autor:
Efimov, Dmitry K., Katsoulis, Georgios P., Rozpętkowski, Tymoteusz, Chwałowski, Sergiusz, Emmanouilidou, Agapi, Prauzner-Bechcicki, Jakub S.
We investigate correlated three-electron escape in Ne when driven by an intense, infrared laser field. We do so by employing a reduced-dimensionality quantum-mechanical model and two three-dimensional semi-classical models. One semi-classical model i
Externí odkaz:
http://arxiv.org/abs/2410.16797
Autor:
Cinins, Arturs, Efimov, Dmitry K., Bruvelis, Martins, Miculis, Kaspars, Kirova, Teodora, Bezuglov, Nikolai N., Ryabtsev, Igor I., Auzinsh, Marcis, Ekers, Aigars
We investigated the absence of certain bright peaks in Autler-Townes laser excitation spectra of alkali metal atoms. Our research revealed that these dips in the spectra are caused by a specific architecture of adiabatic (or ``laser-dressed'') states
Externí odkaz:
http://arxiv.org/abs/2312.02801
Publikováno v:
Physical Review A 108, 033103 (2023)
We study strong-field double ionization in a three-electron atom by applying a simplified, reduced-dimensionality model with three active electrons. The influence of the spin-induced symmetry of the spatial part of the wavefunction on the final two-p
Externí odkaz:
http://arxiv.org/abs/2306.15637
Autor:
Efimov, Dmitry, Maksymov, Artur, Ciapina, Marcelo, Prauzner-Bechcicki, Jakub S., Lewenstein, Maciej, Zakrzewski, Jakub
Strong field processes in the non-relativistic regime are insensitive to the electron spin, i.e. the observables appear to be independent of this electron property. This does not have to be the case for several active electrons where Pauli principle
Externí odkaz:
http://arxiv.org/abs/2104.14438
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 54 114001 (2021)
The interaction of strong pulsed femtosecond laser field with atoms having three equivalent electrons in the outer shell ($p^3$ configuration, e.g. nitrogen) is studied via numerical integration of a time-dependent Schr\"{o}dinger equation on a grid
Externí odkaz:
http://arxiv.org/abs/2102.06466
Autor:
Efimov, Dmitry
The concept of the hafnian first appeared in the works on quantum field theory by E. R. Caianiello. However, it also has an important combinatorial property: the hafnian of the adjacency matrix of an undirected weighted graph is equal to the total su
Externí odkaz:
http://arxiv.org/abs/2101.09722
Machine learning plays an essential role in preventing financial losses in the banking industry. Perhaps the most pertinent prediction task that can result in billions of dollars in losses each year is the assessment of credit risk (i.e., the risk of
Externí odkaz:
http://arxiv.org/abs/2012.15330
Autor:
Woźniak, Aleksander P., Lesiuk, Michał, Przybytek, Michał, Efimov, Dmitry K., Prauzner-Bechcicki, Jakub S., Mandrysz, Michał, Ciappina, Marcelo, Pisanty, Emilio, Zakrzewski, Jakub, Lewenstein, Maciej, Moszyński, Robert
Publikováno v:
J. Chem. Phys. 154, 094111 (2021)
A precise understanding of mechanisms governing the dynamics of electrons in atoms and molecules subjected to intense laser fields has a key importance for the description of attosecond processes such as the high-harmonic generation and ionization. F
Externí odkaz:
http://arxiv.org/abs/2007.10375
Publikováno v:
Phys. Rev. A 101, 063402 (2020)
For a model atom with the $p^3$ valence shell we construct consistent three- and two-active electrons models enabling their direct comparison. Within these models, we study the influence of the third active electron on the double ionization yield in
Externí odkaz:
http://arxiv.org/abs/2003.03141
Publikováno v:
Robust AI in FS 2019 : NeurIPS 2019 Workshop on Robust AI in Financial Services: Data, Fairness, Explainability, Trustworthiness, and Privacy, December 2019, Vancouver, Canada
Generative Adversarial Networks (GANs) became very popular for generation of realistically looking images. In this paper, we propose to use GANs to synthesize artificial financial data for research and benchmarking purposes. We test this approach on
Externí odkaz:
http://arxiv.org/abs/2002.02271