Localization and slow thermalization in quantum many-body systems

Diplôme Thèse Localization and slow thermalization in quantum many-body systems eng 2017-06-12 author Ho Wen Wei 836324 director Abanin Dmitry 842597 10.13097/archive-ouverte/unige:95354 urn:nbn:ch:unige-953545 Sc. 5083 There has been a surge of interest in studying truly nonequilibrium quantum many-body phenomena, motivated both by theoretical advances such as in the understanding of many-body-localization (MBL), and by experimental advances in controlling synthetic quantum systems that serve as rich playgrounds to probe these phenomena. In this thesis, we show that looking at the physical structure of quantum systems, such as the locality of Hamiltonians and the entanglement of quantum states -- concepts with a quantum informational flavor to them -- is a useful lens with which to explore nonequilibrium many-body physics. We use these ideas to study localization -- the breakdown of ergodicity in certain classes of many-body systems, and also the timescales of thermalization in periodically driven many-body systems. We also explain the recent observations in a dipolar system of the discrete time crystal phase, an exemplary nonequilibrium phase of matter, and further consider the dynamics of entanglement in many-body systems. Nonequilibrium many-body physics Many-body localization Floquet systems Entanglement Dynamics Thermalization Dewey 500.2 37 Département de physique théorique 133 false 967 Groupe Abanin 715f6051-c019-4285-a413-eaae240247d6 Thesis Public CompiledVersion_wenweiho_complete_Final.pdf 3775063 application/pdf Restricted 2017-09-06 fcafd5f1fdb2b7fe601d99406b75d72ca830a9493023c0fdddd1b08eb4e8fe57 openAccess Faculté des sciences / Section de physique / Département de physique théorique

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Localization and slow thermalization in quantum many-body systems				2017	1,110	639

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Ho, Wen Wei