Connecting Berezinskii-Kosterlitz-Thouless and BEC Phase Transitions by Tuning Interactions in a Trapped GasReportar como inadecuado


Connecting Berezinskii-Kosterlitz-Thouless and BEC Phase Transitions by Tuning Interactions in a Trapped Gas


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Publication Date: 2015-05-26

Journal Title: Physical Review Letters

Publisher: APS

Volume: 114

Number: 255302

Language: English

Type: Article

Metadata: Show full item record

Citation: Fletcher, R. J., Robert-de-Saint-Vincent, M., Man, J., Navon, N., Smith, R. P., Viebahn, K. G., & Hadzibabic, Z. (2015). Connecting Berezinskii-Kosterlitz-Thouless and BEC Phase Transitions by Tuning Interactions in a Trapped Gas. Physical Review Letters, 114 (255302)

Description: This is the author accepted manuscript. The final version is available from APS via http://dx.doi.org/10.1103/PhysRevLett.114.255302

Abstract: We study the critical point for the emergence of coherence in a harmonically trapped two-dimensional Bose gas with tunable interactions. Over a wide range of interaction strengths we find excellent agreement with the classical-field predictions for the critical point of the Berezinskii-Kosterlitz-Thouless (BKT) superfluid transition. This allows us to quantitatively show, without any free parameters, that the interaction-driven BKT transition smoothly converges onto the purely quantum-statistical Bose-Einstein condensation transition in the limit of vanishing interactions.

Sponsorship: This work was supported by AFOSR, ARO, DARPA OLE, and EPSRC [Grant No. EP/K003615/1]. N. N. acknowledges support from Trinity College, Cambridge, R. P. S. from the Royal Society, and K. G. H. V. from DAAD.

Identifiers:

This record's URL: http://dx.doi.org/10.1103/PhysRevLett.114.255302http://www.repository.cam.ac.uk/handle/1810/248828





Autor: Fletcher, Richard J.Robert-de-Saint-Vincent, MartinMan, JayNavon, NirSmith, Robert P.Viebahn, Konrad G. H.Hadzibabic, Zoran

Fuente: https://www.repository.cam.ac.uk/handle/1810/248828



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