Ground-State Properties of Magnetically Trapped Bose-Condensed Rubidium Gas
| Autor: | Gordon Baym, C. J. Pethick |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Condensed matter physics Condensed Matter (cond-mat) FOS: Physical sciences General Physics and Astronomy chemistry.chemical_element Condensed Matter Kinetic energy Coherence length Rubidium Vortex law.invention Superfluidity chemistry law Atomic physics Ground state Scaling Bose–Einstein condensate |
| Zdroj: | Physical Review Letters. 76:6-9 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.76.6 |
| Popis: | We give a quantitative account of the ground-state properties of the dilute magnetically trapped $^{87}$Rb gas recently cooled and Bose-Einstein condensed at nanokelvin-scale temperatures. Using simple scaling arguments, we show that at large particle number the kinetic energy is a small perturbation, and find a spatial structure of the cloud of atoms and its momentum distribution dependent in an essential way on particle interactions. We also estimate the superfluid coherence length and the critical angular velocity at which vortex lines become energetically favorable. Comment: Minor modification of numbers; 9 pages, RevTex, no figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|