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

Yang, Bing; Chen, Yang-Yang; Zheng, Yong-Guang; Sun, Hui; Dai, Han-Ning; Guan, Xi-Wen; Yuan, Zhen-Sheng; Pan, Jian-Wei


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...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.119.165701
Access Rights: Open Access


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