4.3.4 Shot Noise Corrections4.4 Discussion; References; 5 Recurrences; 5.1 Dispersion Relation and Rephasing; 5.2 Experimental Implementation; 5.2.1 Measurement Scheme; 5.2.2 Results; 5.2.3 Non-recurring Zero Mode; 5.2.4 Common Density Dynamics; 5.3 Theoretical Description; 5.4 Damping; 5.4.1 Sources; 5.4.2 Theoretical Modeling; 5.4.3 Discussion; 5.5 Harmonic Trap; 5.6 Conclusion; References; 6 Outlook; 6.1 Arbitary 1d Potentials; References; A Transverse Broadening Corrections; B Radial GPE Simulations; C Bootstrap
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SUMMARY OR ABSTRACT
Text of Note
Cold atomic gases trapped and manipulated on atom chips allow the realization of seminal one-dimensional (1d) quantum many-body problems in an isolated and well controlled environment. In this context, this thesis presents an extensive experimental study of non-equilibrium dynamics in 1d Bose gases, with a focus on processes that go beyond simple dephasing dynamics. It reports on the observation of recurrences of coherence in the post-quench dynamics of a pair of 1d Bose gases and presents a detailed study of their decay. The latter represents the first observation of phonon-phonon scattering in these systems. Furthermore, the thesis investigates a novel cooling mechanism occurring in Bose gases subjected to a uniform loss of particles. Together, the results presented show a wide range of non-equilibrium phenomena occurring in 1d Bose gases and establish them as an ideal testbed for many-body physics beyond equilibrium.