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SUMMARY:Numerical Study of Surface Waves in Binary Bose-Einstein Condensat
 es
DTSTART;VALUE=DATE-TIME:20111117T110000Z
DTEND;VALUE=DATE-TIME:20111117T120000Z
DTSTAMP;VALUE=DATE-TIME:20261013T153059Z
UID:indico-event-369@indico.ipb.ac.rs
DESCRIPTION:We show by extensive numerical simulations and analytical vari
 ational calculations that elongated binary non-miscible Bose-Einstein cond
 ensates subject to periodic modulations of the radial confine-\nment exhib
 it a Faraday instability similar to that seen in one-component condensates
 . Considering the hyperfine states of\nRb 87 condensates\, we show that th
 ere are two experimentally re\nlevant stationary state configurations: the
  one in which the component\ns form a dark-bright symbiotic pair (the grou
 nd state of the system)\, and the one in which the components are segregat
 ed (first excited\nstate). For each of these two configurations\, we show 
 numerically that far from resonances the Faraday waves excited in the two 
 components are of similar periods\, emerge simultaneously\, and do not imp
 act the dynamics of the bulk of the condensate. We derive analytically the
  period of the\nFaraday waves using a variational treatment of the coupled
  Gross-Pitaevskii equations combined with a Mathieu-type analysis for the 
 selection mechanism of the excited waves. Finally\, we show that for a mod
 ulation frequency close to twice that of the radial trapping\, the emergen
 t surface waves fade out in favor of a forceful collective mode that turns
  the two condensate components miscible.\n\nhttps://events.saifa.rs/event/
 369/
LOCATION:Vinca Institute for Nuclear Sciences
URL:https://events.saifa.rs/event/369/
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