Journal article
Polaron physics in optical lattices
- Abstract:
- We investigate the effects of a nearly uniform Bose-Einstein condensate (BEC) on the properties of immersed trapped impurity atoms. Using a weak-coupling expansion in the BEC-impurity interaction strength, we derive a model describing polarons, i.e., impurities dressed by a coherent state of Bogoliubov photons, and apply it to ultracold bosonic atoms in an optical lattice. We show that, with increasing BEC temperature, the transport properties of the impurities change from coherent to diffusive. Furthermore, stable polaron clusters are formed via a phonon-mediated off-site attraction.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 163.4KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevA.76.011605
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review A More from this journal
- Volume:
- 76
- Issue:
- 1
- Article number:
- 011605(R)
- Publication date:
- 2007-07-01
- Edition:
- Publisher's version
- DOI:
- EISSN:
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1094-1622
- ISSN:
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1050-2947
- Language:
-
English
- Keywords:
- Subjects:
- UUID:
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uuid:c54df3da-b6e2-425b-8d8b-fc65ff68ec79
- Local pid:
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ora:1784
- Deposit date:
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2008-03-14
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2007
- Notes:
- Copyright 2007 The American Physical Society. Citation: Bruderer, M. et al. (2007). 'Polaron physics in optical lattices', Physical Review A 76, 011605(R). [Available at http://link.aps.org/abstract/PRA/v76/e011605].
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