Zobrazeno 1 - 10
of 114
pro vyhledávání: '"A. R. Kolovsky"'
Autor:
P. S. Muraev, Andrey R. Kolovsky
Publikováno v:
Quantum Electronics. 51:502-505
We analyse stationary current of the bosonic particles in a flux rhombic lattice connecting two particle reservoirs. For vanishing interparticle interactions the current is shown to monotonically decrease as the flux is increased and become strictly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f651ef93a6fb5e79518690ce2d3dfc4e
https://doi.org/10.1070/qel17559
https://doi.org/10.1070/qel17559
Publikováno v:
Condensed Matter, Vol 4, Iss 4, p 85 (2019)
We analyze the quantum state of fermionic carriers in a transport channel attached to a particle reservoir. The analysis is done from first principles by considering microscopic models of the reservoir and transport channel. In the case of infinite e
Externí odkaz:
https://doaj.org/article/00cd6e51b3884b83961791a612b22314
It is known that quantum transport of non-interacting Bose particles across the tight-binding chain is ballistic in the sense that the current does not depend on the chain length. We address the question whether the transport of strongly interacting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2afeab4332cb229f7241556b3851e03b
http://arxiv.org/abs/2206.08711
http://arxiv.org/abs/2206.08711
We analyze the current of Bose particles across the tight-binding chain connected at both ends to the particles reservoirs. Unlike the standard open Bose-Hubbard model, where the presence of reservoirs is taken into account by the Lindbladians acting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8688d8042fc0e9b6334369c3e86acd2
http://arxiv.org/abs/2109.14824
http://arxiv.org/abs/2109.14824
We revisit the phenomenon of the resonant transmission of fermionic carriers through a quantum device connected to two contacts with different chemical potentials. We show that, besides the traditional in solid-state physics Landauer-B\"uttiker appro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dbd1ce4defbf8aa2c1fb5713a284471
Autor:
Andrey R. Kolovsky
We introduce a simple model for the quantum transport of Fermi particles between two contacts connected by a lead. It generalizes the Landauer formalizm by explicitly taken into account the relaxation processes in the contacts. We calculate the conta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ad61c7eeb8b554f337247b3c8fff533
http://arxiv.org/abs/2009.04868
http://arxiv.org/abs/2009.04868
Autor:
Andrey R. Kolovsky
Publikováno v:
Physical Review E. 101
We revisit the Born-Markov approximation for an open quantum system by considering a microscopic model of the bath, namely, the Bose-Hubbard chain in the parameter region where it is chaotic in the sense of Quantum Chaos. It is shown that strong ergo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8992de871ad85c9c9d76bc6ac9c624f3
https://doi.org/10.1103/physreve.101.062116
https://doi.org/10.1103/physreve.101.062116
We study the decay of bosonic many-body states in the three well Bose-Hubbard chain where bosons in the central well can escape into a reservoir. For vanishing inter-particle interaction this system supports a non-decaying many-body state which is th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6180b3aef4bedfbda9ea8ad2b99681e5
Publikováno v:
Annalen der Physik
Annalen der Physik, Wiley, 2019, 531 (12), pp.1900231. ⟨10.1002/andp.201900231⟩
Annalen der Physik, Wiley, 2019, 531 (12), pp.1900231. ⟨10.1002/andp.201900231⟩
We study depletion dynamics of an open system of weakly interacting fermions with two-body random interactions. In this model fermions are escaping from the high-energy one-particle orbitals, that mimics the evaporation process used in laboratory exp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::422c9b3d8139e702b41024704b13ea2a
https://hal.archives-ouvertes.fr/hal-02030312
https://hal.archives-ouvertes.fr/hal-02030312
We analyze the energy spectrum of the three-site Bose-Hubbard model. It is shown that this spectrum is a mixture of the regular and irregular spectra associated with the regular and chaotic components of the classical Bose-Hubbard model. We find rela
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad136e28484a46fb728b3e49fc7ebb20
http://arxiv.org/abs/1910.12489
http://arxiv.org/abs/1910.12489