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Josephson effects in dilute Bose-Einstein condensates

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Show simple item record Giovanazzi, Stefano en_US Smerzi, Augusto en_US Fantoni, Stefano en_US 2008-10-31T12:51:08Z en_US 2011-09-07T20:22:31Z 2008-10-31T12:51:08Z en_US 2011-09-07T20:22:31Z 2000 en_US
dc.identifier.citation Phys. Rev. Lett. 84 (2000) 4521-4524 en_US
dc.identifier.uri en_US
dc.description.abstract We propose an experiment that would demonstrate the dc and ac Josephson effects in two weakly linked Bose-Einstein condensates. We consider a time-dependent barrier, moving adiabatically across the trapping potential. The phase dynamics are governed by a "driven-pendulum" equation, as in current-driven superconducting Josephson junctions. At a critical velocity of the barrier (proportional to the critical tunneling current), there is a sharp transition between the dc and ac regimes. The signature is a sudden jump of a large fraction of the relative condensate population. Analytical results are compared with a numerical integration of the Gross-Pitaevskii equation, in an experimentally realistic situation. en_US
dc.format.extent 125632 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.relation.ispartofseries;physics/0002041v1 en_US
dc.relation.uri 10.1103/PhysRevLett.84.4521 en_US
dc.title Josephson effects in dilute Bose-Einstein condensates en_US
dc.type Article en_US
dc.contributor.department Condensed Matter Theory en_US
dc.contributor.area Physics en_US

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