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- W2042452103 abstract "We study theoretically Bose-Einstein condensates with polarized dipolar interactions in anisotropic traps. We map the parameter space by varying the trap frequencies and dipolar interaction strengths and find an irregular-shaped region of parameter space in which density-oscillating condensate states occur, with maximum density away from the trap center. These density-oscillating states may be biconcave (red-blood-cell-shaped), or have two or four peaks. For all trap frequencies, the condensate becomes unstable to collapse for sufficiently large dipole interaction strength. The collapse coincides with the softening of an elementary excitation. When the condensate mode is density oscillating, the character of the softening excitation is related to the structure of the condensate. We classify these excitations by linear and angular characteristics. We also find excited solutions to the Gross-Pitaevskii equation, which are always unstable." @default.
- W2042452103 created "2016-06-24" @default.
- W2042452103 creator A5001664912 @default.
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- W2042452103 date "2012-11-26" @default.
- W2042452103 modified "2023-10-17" @default.
- W2042452103 title "Stability and structure of an anisotropically trapped dipolar Bose-Einstein condensate: Angular and linear rotons" @default.
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- W2042452103 doi "https://doi.org/10.1103/physreva.86.053623" @default.
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