Magnetoroton softening in Rb spinor condensates with dipolar interactions.
نویسندگان
چکیده
Superfluids with a tendency towards periodic order have both phonon- and rotonlike spectra. We show that magnetoroton softening occurs in 87Rb spinor condensates. A rich variety of dynamical instabilities emerges as a function of the magnetic field orientation and strength of the quadratic Zeeman shift. These instabilities are driven by an effective dipolar interaction modified dramatically by quasi-two-dimensionality and rapid Larmor precession.
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عنوان ژورنال:
- Physical review letters
دوره 103 18 شماره
صفحات -
تاریخ انتشار 2009