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Motion of a vortex line near the boundary of a semi-infinite uniform condensate | | Peter Mason
; Natalia G. Berloff
; Alexander L. Fetter
; | | Date: |
26 May 2006 | | Subject: | Soft Condensed Matter | | Abstract: | We consider the motion of a vortex in an asymptotically homogeneous condensate bounded by a solid wall where the wave function of the condensate vanishes. For a vortex parallel to the wall, the motion is essentially equivalent to that generated by an image vortex, but the depleted surface layer induces an effective shift in the position of the image compared to the case of a vortex pair in an otherwise uniform flow. Specifically, the velocity of the vortex can be approximated by $U approx (hbar/2m)(y_0-sqrt 2 xi)^{-1}$, where $y_0$ is the distance from the center of the vortex to the wall, $xi$ is the healing length of the condensate and $m$ is the mass of the boson. | | Source: | arXiv, cond-mat/0605648 | | Services: | Forum | Review | PDF | Favorites | |
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