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SUMMARY:Numerical simulations of Faraday waves in binary Bose-Einstein con
 densates
DTSTART;VALUE=DATE-TIME:20111124T135000Z
DTEND;VALUE=DATE-TIME:20111124T141000Z
DTSTAMP;VALUE=DATE-TIME:20261013T185817Z
UID:indico-contribution-370-324@indico.ipb.ac.rs
DESCRIPTION:Speakers: Antun Balaž (IPB)\nWe show by extensive numerical s
 imulations and analytical variational calculations that elongated binary n
 on-miscible Bose-Einstein condensates subject to periodic modulations of t
 he radial confinement exhibit a Faraday instability similar to that seen i
 n one-component condensates. Considering the hyperfine states of 87Rb cond
 ensates\, we show that there are two experimentally relevant stationary st
 ate configurations: the one in which the components form a dark-bright sym
 biotic pair (the ground state of the system)\, and the one in which the co
 mponents are segregated (first excited state). For each of these two confi
 gurations\, we show numerically that far from resonances the Faraday waves
  excited in the two components are of similar periods\, emerge simultaneou
 sly\, and do not impact the dynamics of the bulk of the condensate. We der
 ive analytically the period of the Faraday waves using a variational treat
 ment of the coupled Gross-Pitaevskii equations combined with a Mathieu-typ
 e analysis for the selection mechanism of the excited waves. Finally\, we 
 show that for a modulation frequency close to twice that of the radial tra
 pping\, the emergent surface waves fade out in favor of a forceful collect
 ive mode that turns the two condensate components miscible.\n\nhttps://eve
 nts.saifa.rs/event/370/contributions/324/
LOCATION:Universität Leipzig
URL:https://events.saifa.rs/event/370/contributions/324/
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