Date of Award
Doctor of Philosophy (PhD)
Ana Maria Rey
The coherence and tunability of Feshbach-resonant gasses enable the experimental studies of highly nonequiblirum quantum many-body states, with a particular focus on the dynamics following a quantum Hamiltonian quench Hi to Hf. These have raised numerous fundamental questions on thermalization under unitary time evolution of a closed quantum system. In my dissertation, I studied the dynamics of two specific systems following a quantum quench: 3d Rb85 resonant Bose gas and 1d spin-imbalanced Fermi-Hubbard model. Using self-consistent Bogoliubov theory and Bosonization formalism, I identify rich post quench dynamics, which lead to thermal or prethermal states that depend strongly on initial state properties. My finding helps better understand the intriguing physics of unitary Bose gas as well as the elusive inhomogeneous superconductivity.
Yin, Xiao, "Nonequilibrium Dynamics of Quenched Quantum Many-Body Systems" (2016). Physics Graduate Theses & Dissertations. 188.