dorsal/arxiv
View SchemaEvolution and global collapse of trapped Bose condensates under variations of the scattering length
| Authors | U. Kagan, E. L. Surkov, G. V. Shlyapnikov |
|---|---|
| Categories | |
| ArXiv ID | physics/9705005 |
| URL | https://arxiv.org/abs/physics/9705005 |
| DOI | 10.1103/PhysRevLett.79.2604 |
| Journal | Phys.Rev.Lett. 79 (1997) 2604-2607 |
Abstract
We develop the idea of selectively manipulating the condensate in a trapped Bose-condensed gas, without perturbing the thermal cloud. The idea is based on the possibility to modify the mean field interaction between atoms (scattering length) by nearly resonant incident light or by spatially uniform change of the trapping magnetic field. For the gas in the Thomas-Fermi regime we find analytical scaling solutions for the condensate wavefunction evolving under arbitrary variations of the scattering length $a$. The change of $a$ from positive to negative induces a global collapse of the condensate, and the final stages of the collapse will be governed by intrinsic decay processes.
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"abstract": "We develop the idea of selectively manipulating the condensate in a trapped\nBose-condensed gas, without perturbing the thermal cloud. The idea is based on\nthe possibility to modify the mean field interaction between atoms (scattering\nlength) by nearly resonant incident light or by spatially uniform change of the\ntrapping magnetic field. For the gas in the Thomas-Fermi regime we find\nanalytical scaling solutions for the condensate wavefunction evolving under\narbitrary variations of the scattering length $a$. The change of $a$ from\npositive to negative induces a global collapse of the condensate, and the final\nstages of the collapse will be governed by intrinsic decay processes.",
"arxiv_id": "physics/9705005",
"authors": [
"U. Kagan",
"E. L. Surkov",
"G. V. Shlyapnikov"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevLett.79.2604",
"journal_ref": "Phys.Rev.Lett. 79 (1997) 2604-2607",
"title": "Evolution and global collapse of trapped Bose condensates under variations of the scattering length",
"url": "https://arxiv.org/abs/physics/9705005"
},
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