Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensate
We study the evolution of an initially confined atom condensate, which is progressively outcoupled by gradually lowering the confining barrier on one side. The goal is to identify protocols that best lead to a quasi-stationary sonic black hole separating regions of subsonic and supersonic flow. An o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/16/12/123033 |
| _version_ | 1797751437622509568 |
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| author | J R M de Nova D Guéry-Odelin F Sols I Zapata |
| author_facet | J R M de Nova D Guéry-Odelin F Sols I Zapata |
| author_sort | J R M de Nova |
| collection | DOAJ |
| description | We study the evolution of an initially confined atom condensate, which is progressively outcoupled by gradually lowering the confining barrier on one side. The goal is to identify protocols that best lead to a quasi-stationary sonic black hole separating regions of subsonic and supersonic flow. An optical lattice is found to be more efficient than a single barrier in yielding a long-time stationary flow. This is best achieved if the final conduction band is broad and its minimum is not much lower than the initial chemical potential. An optical lattice with a realistic Gaussian envelope yields similar results. We analytically prove and numerically check that, within a spatially coarse-grained description, the sonic horizon is bound to lie right at the envelope maximum. We derive an analytical formula for the Hawking temperature in that setup. |
| first_indexed | 2024-03-12T16:49:32Z |
| format | Article |
| id | doaj.art-57d3bc278eb940ffab61656d8a41c9cf |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:49:32Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-57d3bc278eb940ffab61656d8a41c9cf2023-08-08T11:25:42ZengIOP PublishingNew Journal of Physics1367-26302014-01-01161212303310.1088/1367-2630/16/12/123033Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensateJ R M de Nova0D Guéry-Odelin1F Sols2I Zapata3Departamento de Fisica de Materiales, U niversidad Complutense de Madrid , E-28040 Madrid, SpainUniversité de Toulouse , UPS, Laboratoire Collisions Agrégats Réactivité, IRSAMC, and CNRS, UMR 5589, F-31062 Toulouse, FranceDepartamento de Fisica de Materiales, U niversidad Complutense de Madrid , E-28040 Madrid, SpainDepartamento de Fisica de Materiales, U niversidad Complutense de Madrid , E-28040 Madrid, SpainWe study the evolution of an initially confined atom condensate, which is progressively outcoupled by gradually lowering the confining barrier on one side. The goal is to identify protocols that best lead to a quasi-stationary sonic black hole separating regions of subsonic and supersonic flow. An optical lattice is found to be more efficient than a single barrier in yielding a long-time stationary flow. This is best achieved if the final conduction band is broad and its minimum is not much lower than the initial chemical potential. An optical lattice with a realistic Gaussian envelope yields similar results. We analytically prove and numerically check that, within a spatially coarse-grained description, the sonic horizon is bound to lie right at the envelope maximum. We derive an analytical formula for the Hawking temperature in that setup.https://doi.org/10.1088/1367-2630/16/12/123033Hawking radiationoptical latticeatomtronics03.75.Kk04.62.+v04.70.Dy |
| spellingShingle | J R M de Nova D Guéry-Odelin F Sols I Zapata Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensate New Journal of Physics Hawking radiation optical lattice atomtronics 03.75.Kk 04.62.+v 04.70.Dy |
| title | Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensate |
| title_full | Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensate |
| title_fullStr | Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensate |
| title_full_unstemmed | Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensate |
| title_short | Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensate |
| title_sort | birth of a quasi stationary black hole in an outcoupled bose einstein condensate |
| topic | Hawking radiation optical lattice atomtronics 03.75.Kk 04.62.+v 04.70.Dy |
| url | https://doi.org/10.1088/1367-2630/16/12/123033 |
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