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Self-trapping of impurities in Bose-Einstein condensates: Strong attractive and repulsive coupling

Abstract:

We study the interaction-induced localization - the so-called self-trapping - of a neutral impurity atom immersed in a homogeneous Bose-Einstein condensate (BEC). Based on a Hartree description of the BEC we show that - unlike repulsive impurities - attractive impurities have a singular ground state in 3d and shrink to a point-like state in 2d as the coupling approaches a critical value β*. Moreover, we find that the density of the BEC increases markedly in the vicinity of attractive impuriti...

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Publication status:
Published

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Publisher copy:
10.1209/0295-5075/82/30004

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Atomic and Laser Physics
Role:
Author
Journal:
EPL
Volume:
82
Issue:
3
Pages:
30004-30004
Chapter number:
ARTN 30004
Publication date:
2008-05-05
DOI:
EISSN:
1286-4854
ISSN:
0295-5075
URN:
uuid:418278f4-82c7-4e71-a40a-99e887f31c80
Source identifiers:
6161
Local pid:
pubs:6161

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