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Showing 1 to 7 of 7 for “"Kibble-zurek Mechanism"”.
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Observation of the Kibble-Zurek mechanism in a bosonic gas
… of defects at the domain boundaries. The Kibble-Zurek theory provides a description for this universal phenomenon, which applies to many different systems in nature, and it predicts a power-law dependence of the defect density on the quench rate. This thesis reports on the results of the …
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Little Big Bangs in Helium-Three
… lead to the formation of vortex loops via the Kibble-Zurek mechanism. A consideration of the free energy available in the quenched region for the production of such vortices reveals that the Kibble-Zurek scaling law gives at best a lower bound on the defect spacing. Further, for quenches that …
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Topological Signatures for the Kitaev Chain in and out of Equilibrium
… to the Landau-Zener framework and the Kibble-Zurek mechanism where applicable. Particular emphasis is placed on the excitation density, the evolution of geometric phases, and the role of symmetries in constraining the dynamics. These ideas are explored in both the Kitaev chain and the …
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Dynamics of ultracold bosons in a disordered optical lattice
… we observe is reminiscent of the quantum Kibble Zurek mechanism, where the relaxation timescale diverges and local fluctuations are ""frozen"" into the system near the phase boundary. Understanding how disorder impacts the Kibble Zurek paradigm about behavior near a phase boundary provides …
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Non-equilibrium dynamics of ultracold atoms in optical lattices
… suggest an excitation process analogous to the mechanism for defect generation in non-equilibrium classical phase transitions. This experiment constitutes the first observation of the Kibble-Zurek mechanism in a quantum quench. We have reported our findings in Ref. [1]. In a second experiment, …
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Fundamental Excitations of Nonconservative Quantum Fluids
… process in a nonequilibrium analogue of the Kibble-Zurek mechanism. I also study the instability of vortices in this regime, which I show are unstable to self-slicing into dark solitons (Ising domain walls), the opposite transformation known to equilibria condensates, in which dark solitons …
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Explorations of engineered bosonic systems in ultracold atoms, oscillator networks, quantum spin chains, and space
DSpace SAF Submission Ingestion Package generated from Vireo submission #21359 on 2025-03-28 at 14:25:59