Ghosh, Tarun Kanti ; Baskaran, G. (2004) Cooperative ring exchange and quantum melting of vortex lattices in atomic Bose-Einstein condensates Physical Review A, 69 (2). 023603_1-023603_6. ISSN 1050-2947
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Official URL: http://pra.aps.org/abstract/PRA/v69/i2/e023603
Related URL: http://dx.doi.org/10.1103/PhysRevA.69.023603
Abstract
Cooperative ring exchange is suggested as a mechanism of quantum melting of vortex lattices in a rapidly rotating quasi-two-dimensional atomic Bose-Einstein condensate (BEC). Using an approach pioneered by Kivelson et al. [Phys. Rev. Lett. 56, 873 (1986)] for the fractional quantized Hall effect, we calculate the condition for quantum melting instability by considering large-correlated ring exchanges in a two-dimensional Wigner crystal of vortices in a strong "pseudomagnetic field"generated by the background superfluid Bose particles. BEC may be profitably used to address issues of quantum melting of a pristine Wigner solid devoid of complications of real solids.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 1882 |
Deposited On: | 08 Oct 2010 11:51 |
Last Modified: | 16 May 2016 12:56 |
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