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Quantum criticality and the Tomonaga-Luttinger liquid in one-dimensional Bose gases

We experimentally investigate the quantum criticality and Tomonaga-Luttinger liquid (TLL) behavior within one-dimensional (1D) ultracold atomic gases. Based on the measured density profiles at different temperatures, the universal scaling laws of thermodynamic quantities are observed. The quantum cr...

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Bibliographic Details
Main Authors: Yang, Bing (Author) , Zheng, Yong-Guang (Author) , Sun, Hui (Author) , Dai, Han-Ning (Author) , Yuan, Zhen-Sheng (Author) , Pan, Jian-Wei (Author)
Format: Article (Journal)
Language:English
Published: 18 October 2017
In: Physical review letters
Year: 2017, Volume: 119, Issue: 16, Pages: 165701
ISSN:1079-7114
DOI:10.1103/PhysRevLett.119.165701
Online Access:Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.119.165701
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.119.165701
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Author Notes:Bing Yang, Yang-Yang Chen, Yong-Guang Zheng, Hui Sun, Han-Ning Dai, Xi-Wen Guan, Zhen-Sheng Yuan and Jian-Wei Pan
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Summary:We experimentally investigate the quantum criticality and Tomonaga-Luttinger liquid (TLL) behavior within one-dimensional (1D) ultracold atomic gases. Based on the measured density profiles at different temperatures, the universal scaling laws of thermodynamic quantities are observed. The quantum critical regime and the relevant crossover temperatures are determined through the double-peak structure of the specific heat. In the TLL regime, we obtain the Luttinger parameter by probing sound propagation. Furthermore, a characteristic power-law behavior emerges in the measured momentum distributions of the 1D ultracold gas, confirming the existence of the TLL.
Item Description:Gesehen am 03.04.2018
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.119.165701

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