Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Aleksandrov, A."'
We investigate the nonperturbative process of vacuum pair production in a combination of two counterpropagating linearly polarized laser pulses of a finite spatial extent. By means of the locally-constant field approximation (LCFA), we calculate the
Externí odkaz:
http://arxiv.org/abs/2408.04084
Autor:
Marino, Bill, Aleksandrov, Preslav, Rahman, Carwyn, Pi, Yulu, Shen, Bill, Yew, Rui-jie, Lane, Nicholas D.
As the artificial intelligence (AI) supply chain grows more complex, AI systems and models are increasingly likely to incorporate externally-sourced ingredients such as datasets and other models. In such cases, determining whether or not an AI system
Externí odkaz:
http://arxiv.org/abs/2406.14758
Magnetic field is a powerful tool for the manipulation of material's electronic and optical properties. In the domain of transition metal dichalcogenide monolayers, it allows one to unveil the spin, valley, and orbital properties of many-body exciton
Externí odkaz:
http://arxiv.org/abs/2406.04726
Autor:
Iacob, Alex, Sani, Lorenzo, Marino, Bill, Aleksandrov, Preslav, Shen, William F., Lane, Nicholas Donald
The reliance of language model training on massive amounts of computation and vast datasets scraped from potentially low-quality, copyrighted, or sensitive data has come into question practically, legally, and ethically. Federated learning provides a
Externí odkaz:
http://arxiv.org/abs/2405.14446
Autor:
Sani, Lorenzo, Iacob, Alex, Cao, Zeyu, Marino, Bill, Gao, Yan, Paulik, Tomas, Zhao, Wanru, Shen, William F., Aleksandrov, Preslav, Qiu, Xinchi, Lane, Nicholas D.
Generative pre-trained large language models (LLMs) have demonstrated impressive performance over a wide range of tasks, thanks to the unprecedented amount of data they have been trained on. As established scaling laws indicate, LLMs' future performa
Externí odkaz:
http://arxiv.org/abs/2405.10853
Pair production in rotating electric fields via quantum kinetic equations: Resolving helicity states
Autor:
Aleksandrov, I. A., Kudlis, A.
We investigate the phenomenon of electron-positron pair production from vacuum in the presence of a strong electric field of circular polarization. By means of a nonperturbative approach based on the quantum kinetic equations (QKEs), we numerically c
Externí odkaz:
http://arxiv.org/abs/2404.02878
Publikováno v:
Acta Materialia, 270, 119854 (2024)
Processes of diffusion of As and P atoms in InP and InAs, and atomic and energy structure of group-V vacancies and interstitial P and As atoms in InP and InAs have been investigated using density functional theory. Formation energies of group-V vacan
Externí odkaz:
http://arxiv.org/abs/2404.01607
Autor:
Kalchevski, Dobromir A., Trifonov, Dimitar V., Kolev, Stefan K., Popov, Valentin N., Aleksandrov, Hristiyan A., Milenov, Teodor I.
We present a computational study of assembling carbon clusters and nanophases in space from carbon aggregations. Geometry optimizations and Density-functional-based tight-binding (SCC-DFTB) dynamics methods are employed to predict carbon clusters, th
Externí odkaz:
http://arxiv.org/abs/2404.00096
We investigate the phenomenon of electron-positron pair production from vacuum in the presence of a uniform time-dependent electric field of arbitrary polarization. Taking into account the interaction with the external classical background in a nonpe
Externí odkaz:
http://arxiv.org/abs/2403.17204
Autor:
Akimov, D. Yu., Aleksandrov, I. S., Kurbonova, F. B. Ata, Belov, V. A., Bolozdynya, A. I., Etenko, A. V., Galavanov, A. V., Gusakov, Yu. V., Khromov, A. V., Konovalov, A. M., Kornoukhov, V. N., Kovalenko, A. G., Kozlova, E. S., Koskin, Yu. I., Kumpan, A. V., Lukyashin, A. V., Pinchuk, A. V., Razuvaeva, O. E., Rudik, D. G., Shakirov, A. V., Simakov, G. E., Sosnovtsev, V. V., Vasin, A. A.
RED-100 is a two-phase Xe detector designed and built for the study of coherent elastic neutrino-nucleus scattering CEvNS of reactor antineutrinos. A comprehensive calibration was performed in order to obtain important parameters of the detector duri
Externí odkaz:
http://arxiv.org/abs/2403.12645