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dc.contributor.author |
Kulik, I.O. |
|
dc.date.accessioned |
2018-01-15T13:15:33Z |
|
dc.date.available |
2018-01-15T13:15:33Z |
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dc.date.issued |
2001 |
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dc.identifier.citation |
Real-space
condensation in a dilute Bose gas at low temperature / I.O. Kulik // Физика низких
температур. — 2001. — Т. 27, № 9-10. — С. 1179-1182. — Бібліогр.: 17 назв. — англ. |
uk_UA |
dc.identifier.issn |
0132-6414 |
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dc.identifier.other |
PACS: 64.60.-i |
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dc.identifier.uri |
http://dspace.nbuv.gov.ua/handle/123456789/129021 |
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dc.description.abstract |
We show with a direct numerical analysis that a dilute Bose gas in an external potential - which is choosen for simplicity as a radial parabolic well - undergoes at certain temperature Tc a phase transition to a state supporting macroscopic fraction of particles at the origin of the phase space (r=0,p=0). Quantization of particle motion in a well wipes out sharp transition but supports a distribution of radial particle density ρ(r) peacked at r=0 (a real-space condensate) as well as the phase-space Wigner distribution density W(r, p) peaked at r=0 and p=0 below the crossover temperature Tc* of order of Tc. Fixed-particle-number canonical ensemble which is a combination of the fixed-μ condensate part and the fixed-m excitation part is suggested to resolve the difficulty of large fluctuation of the particle number (δN~N) in the Bose-Einstein condensation problem treated within the orthodox grand canonical ensemble formalism. |
uk_UA |
dc.language.iso |
en |
uk_UA |
dc.publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
uk_UA |
dc.relation.ispartof |
Физика низких температур |
|
dc.subject |
Статьи, посвященные столетию со дня рождения Л. В. Шубникова |
uk_UA |
dc.title |
Real-space condensation in a dilute Bose gas at low temperature |
uk_UA |
dc.type |
Article |
uk_UA |
dc.status |
published earlier |
uk_UA |
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