Equilibrium and Nonequilibrium Behaviours of 1D Bose Gases

Yiyuan Bess Fang 1
1 Laboratoire Charles Fabry / Optique atomique
LCF - Laboratoire Charles Fabry
Abstract : One-dimensional quantum many-body systems exhibit peculiar and intriguing behaviors as a consequence of the reduced dimensionality, which enhances the effect of fluctuations and correlations. The high degree of isolation and controllability of experiments manipulating ultra-cold atomic gases allows for the experimental simulation of text-book models, for which many theory tools are available for quantitative comparison. I will present instances of such efforts carried out during my PhD thesis, namely, the studies performed to investigate the behavior of 1D Bose gas (Lieb-Liniger gas) at equilibrium and beyond. An overview of the toolbox available to date to characterize the equilibrium thermodynamics of a Lieb-Liniger gas will be shown, followed by a detailed study of the breathing mode of such a system.
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Yiyuan Bess Fang. Equilibrium and Nonequilibrium Behaviours of 1D Bose Gases. Optics [physics.optics]. Institut d’Optique Graduate School, 2014. English. ⟨NNT : 2014IOTA0005⟩. ⟨tel-01127046⟩

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