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Rapidly rotating Bose-Einstein condensates in anharmonic potentials
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- Kavoulakis, Georgios (author)
- Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
- Baym, G (author)
- (creator_code:org_t)
- 2003-05-30
- 2003
- English.
- In: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 5
- Journal article (peer-reviewed)
Abstract
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- Rapidly rotating Bose-Einstein condensates confined in anharmonic traps can exhibit a rich variety of vortex phases, including a vortex lattice, a vortex lattice with a hole, and a giant vortex. Using an augmented Thomas - Fermi variational approach to determine the ground state of the condensate in the rotating frame - valid for sufficiently strongly interacting condensates - we determine the transitions between these three phases for a quadratic- plus- quartic confining potential. Combining the present results with previous numerical simulations of small rotating condensates in such anharmonic potentials, we delineate the general structure of the zero-temperature phase diagram.
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- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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- art (subject category)
- ref (subject category)
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