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Interplay of density and phase fluctuations in ultracold one-dimensional Bose gases

Lookup NU author(s): Professor Nikolaos ProukakisORCiD

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Abstract

The relative importance of density and phase fluctuations in ultracold one-dimensional atomic Bose gases is investigated. By defining appropriate characteristic temperatures for their respective onset, a broad experimental regime is found, where density fluctuations set in at a lower temperature than phase fluctuations. This is in stark contrast to the usual experimental regime explored up to now, in which phase fluctuations are largely decoupled from density fluctuations, a regime also recovered in this work as a limiting case. Observation of the regime of dominant density fluctuations is shown to be well within current experimental capabilities for both 23Na and 87Rb, requiring relatively low temperatures, small atom numbers, and moderate aspect ratios.


Publication metadata

Author(s): Proukakis NP

Publication type: Article

Publication status: Published

Journal: Physical Review A: Atomic, Molecular and Optical Physics

Year: 2006

Volume: 73

Issue: 2

ISSN (print): 1050-2947

ISSN (electronic): 1094-1622

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevA.73.023605

DOI: 10.1103/PhysRevA.73.023605


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