Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Arseni Goussev"'
Autor:
Maximilien Barbier, Arseni Goussev
Publikováno v:
New Journal of Physics, Vol 24, Iss 3, p 033014 (2022)
Diffraction in time manifests itself as the appearance of probability-density fringes when a matter wave passes through an opaque screen with abrupt temporal variations of transmission properties. Here we analytically describe the phase-space structu
Externí odkaz:
https://doaj.org/article/1fa5f0dd3f5a454199575449430f0f50
Autor:
Maximilien Barbier, Arseni Goussev
Publikováno v:
Quantum, Vol 5, p 536 (2021)
In its standard formulation, quantum backflow is a classically impossible phenomenon in which a free quantum particle in a positive-momentum state exhibits a negative probability current. Recently, Miller et al. [Quantum 5, 379 (2021)] have put forwa
Externí odkaz:
https://doaj.org/article/58ae9f74ca9b4805aea90f9094c61343
Autor:
Arseni Goussev
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033206 (2020)
In its original formulation, quantum backflow (QB) is an interference effect that manifests itself as a negative probability transfer for free-particle states comprised of plane waves with only positive momenta. Quantum reentry (QR) is another interf
Externí odkaz:
https://doaj.org/article/a71215e522cc495482795cdbd6e9b9b9
Publikováno v:
New Journal of Physics, Vol 20, Iss 3, p 033013 (2018)
We propose a method—a quantum time mirror (QTM)—for simulating a partial time-reversal of the free-space motion of a non-relativistic quantum wave packet. The method is based on a short-time spatially homogeneous perturbation to the wave packet d
Externí odkaz:
https://doaj.org/article/371cfaeec54a455baa12d64615815ae8
Autor:
Arseni Goussev
Publikováno v:
American Journal of Physics. 88:1023-1028
The left-to-right motion of a free quantum Gaussian wave packet can be accompanied by the right-to-left flow of the probability density, the effect recently studied by Villanueva. Using the Wigner representation of the wave packet, we analyze the eff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::489891c8de1d89515a71e7851a211140
https://doi.org/10.1119/10.0001773
https://doi.org/10.1119/10.0001773
Autor:
Maximilien Barbier, Christopher J Fewster, Arseni Goussev, Gregory V Morozov, Shashi C L Srivastava
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 56:138003
Comment on "Backflow in relativistic wave equations" by I. Bialynicki-Birula, Z. Bialynicka-Birula, and S. Augustynowicz [Journal of Physics A: Mathematical and Theoretical, volume 55, page 255702 (2022)].
2 pages, no figures
2 pages, no figures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ba5802f46487603c005b61d5f6cbbd2
https://doi.org/10.1088/1751-8121/acba62
https://doi.org/10.1088/1751-8121/acba62
Autor:
Arseni Goussev, Maximilien Barbier
Publikováno v:
Quantum, Vol 5, p 536 (2021)
Quantum
Quantum
In its standard formulation, quantum backflow is a classically impossible phenomenon in which a free quantum particle in a positive-momentum state exhibits a negative probability current. Recently, Miller et al. [Quantum 5, 379 (2021)] have put forwa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99201fc11f519b1f9fa42153e0f181a0
http://arxiv.org/abs/2103.06728
http://arxiv.org/abs/2103.06728
Autor:
Arseni Goussev
Publikováno v:
Goussev, A 2021, ' Quantum backflow in a ring ', Physical Review A, vol. 103, no. 2, 022217, pp. 1-6 . https://doi.org/10.1103/PhysRevA.103.022217
Free motion of a quantum particle with the wave function entirely comprised of plane waves with non-negative momenta may be accompanied by negative probability current, an effect called quantum backflow. The effect is weak and fragile, and has not ye
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47f51e8186e04bf71e6af16ef0d8419e
Autor:
Arseni Goussev
Publikováno v:
Goussev, A 2019, ' Equivalence between quantum backflow and classically forbidden probability flow in a diffraction-in-time problem ', Physical Review A, vol. 99, no. 4, 043626 . https://doi.org/10.1103/PhysRevA.99.043626
Quantum backflow is an interference effect in which a matter-wave packet comprised of only plane waves with non-negative momenta exhibits negative probability flux. Here we show that this effect is mathematically equivalent to the appearance of class
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4f258d4281f4158add13a42ec0aabd3
https://researchportal.port.ac.uk/portal/en/publications/equivalence-between-quantum-backflow-and-classically-forbidden-probability-flow-in-a-diffractionintime-problem(00e4d89c-f612-4d0a-aa32-86e02974afb5).html
https://researchportal.port.ac.uk/portal/en/publications/equivalence-between-quantum-backflow-and-classically-forbidden-probability-flow-in-a-diffractionintime-problem(00e4d89c-f612-4d0a-aa32-86e02974afb5).html
Publikováno v:
Goussev, A, Robbins, J M, Slastikov, V & Vasylkevych, S 2020, ' Dynamics of ferromagnetic domain walls under extreme fields ', Physical Review B, vol. 101, no. 2, 020418(R) . https://doi.org/10.1103/PhysRevB.101.020418
Goussev, A, Robbins, J M, Slastikov, V & Vasylkevych, S 2020, ' Dynamics of ferromagnetic domain walls under extreme fields ', Physical Review B, vol. 101, 020418(R) . https://doi.org/10.1103/PhysRevB.101.020418
Goussev, A, Robbins, J M, Slastikov, V & Vasylkevych, S 2020, ' Dynamics of ferromagnetic domain walls under extreme fields ', Physical Review B, vol. 101, 020418(R) . https://doi.org/10.1103/PhysRevB.101.020418
We report the existence of a new regime for domain wall motion in uniaxial and near-uniaxial ferromagnetic nanowires, characterised by applied magnetic fields sufficiently strong that one of the domains becomes unstable. There appears a new stable so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c4a2fda08b9cbd246da331267f59562