Condensation and vortex formation in a Bose gas upon cooling
The mechanism for the transition of a Bose gas to the superfluid state via thermal fluctuations is considered. It is shown that in the process of external cooling some critical fluctuations (instantons) are formed above the critical temperature. The probability of the instanton formation is calculat...
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| Veröffentlicht in: | Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Statistical physics, plasmas, fluids, and related interdisciplinary topics, 2006-01, Vol.73 (1 Pt 2), p.016127-016127, Article 016127 |
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| container_end_page | 016127 |
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| container_issue | 1 Pt 2 |
| container_start_page | 016127 |
| container_title | Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics |
| container_volume | 73 |
| creator | Brener, E A Iordanskiy, S V Saptsov, R B |
| description | The mechanism for the transition of a Bose gas to the superfluid state via thermal fluctuations is considered. It is shown that in the process of external cooling some critical fluctuations (instantons) are formed above the critical temperature. The probability of the instanton formation is calculated in the three- and two-dimensional cases. It is found that this probability increases as the system approaches the transition temperature. It is shown that the evolution of an individual instanton is impossible without the formation of vortices in its superfluid part. |
| doi_str_mv | 10.1103/PhysRevE.73.016127 |
| format | Article |
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| ispartof | Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 2006-01, Vol.73 (1 Pt 2), p.016127-016127, Article 016127 |
| issn | 1539-3755 1063-651X 1550-2376 1095-3787 |
| language | eng |
| recordid | cdi_osti_scitechconnect_21069753 |
| source | American Physical Society Journals |
| subjects | BOSE-EINSTEIN CONDENSATION BOSE-EINSTEIN GAS BOSONS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COOLING CRITICAL TEMPERATURE FLUCTUATIONS INSTANTONS MATERIALS SCIENCE PHASE TRANSFORMATIONS PROBABILITY SUPERFLUIDITY TWO-DIMENSIONAL CALCULATIONS VORTICES |
| title | Condensation and vortex formation in a Bose gas upon cooling |
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