Zobrazeno 1 - 10 of 620 pro vyhledávání: '"S V Peletminskii"'
1
Broken-axisymmetry state and magnetic state diagram of spin-1 condensate through the prism of quadrupole degrees of freedom
Autor: M Bulakhov, A S Peletminskii, S V Peletminskii, Yu V Slyusarenko
We theoretically study a weakly interacting gas of spin-1 atoms with Bose-Einstein condensate in external magnetic field within the Bogoliubov approach. To this end, in contrast to previous studies, we employ the general Hamiltonian, which includes b
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62816e89fde5c2bd0e517846f54a1230
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5
Magnetic phases and phase diagram of spin-1 condensate with quadrupole degrees of freedom
Autor: Yu. V. Slyusarenko, S. V. Peletminskii, M. S. Bulakhov, A. S. Peletminskii
Publikováno v: Journal of Physics A: Mathematical and Theoretical. 54:165001
We obtain and justify a many-body Hamiltonian of pairwise interacting spin-1 atoms, which includes eight generators of the SU(3) group associated with spin and quadrupole degrees of freedom. It is shown that this Hamiltonian is valid for non-local in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bd2c677472cc7a661ecda1340caa637
https://doi.org/10.1088/1751-8121/abed16
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6
Re-examining the quadratic approximation in theory of a weakly interacting Bose gas with condensate: the role of nonlocal interaction potentials
Autor: Yu. V. Slyusarenko, A. S. Peletminskii, Andrii Sotnikov, M. S. Bulakhov, S. V. Peletminskii
Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics
We derive and analyze the coupled equations of quadratic approximation of the Bogoliubov model for a weakly interacting Bose gas. The first equation determines the condensate density as a variational parameter and ensures the minimum of the grand the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a293aebd20724b930220aeaa4db024c
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7
Ground state and excitations of a Bose-Einstein condensate of atoms and their diatomic bound states
Autor: S. V. Peletminskii, Yu. M. Poluektov, A. S. Peletminskii
Publikováno v: Low Temperature Physics. 40:500-507
This is a theoretical study of a many-body system of spin-zero atoms and their diatomic bound states (molecules) which form a single Bose-Einstein condensate at zero temperature. The Gross-Pitaevskii approach is used to analyze the equilibrium states
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d8e5df041ccca92f69d72f9e82bc6dc
https://doi.org/10.1063/1.4883893
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9
Quasiparticle theory of superfluid Bose systems with single-particle and pair condensates
Autor: S. V. Peletminskii, A. S. Peletminskii
Publikováno v: Low Temperature Physics. 36:693-699
A semi-phenomenological theory of superfluid Bose systems based on a quasiparticle description is examined. This theory makes it possible to study, from a unified standpoint, single-particle and pair condensates with repulsive, as well as attractive,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47fedc04d33e8c0d6646097d2599ddca
https://doi.org/10.1063/1.3490834
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