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dc.contributor.authorReichl, Matthew Douglas
dc.date.accessioned2018-04-26T14:16:46Z
dc.date.available2018-04-26T14:16:46Z
dc.date.issued2017-08-30
dc.identifier.otherReichl_cornellgrad_0058F_10322
dc.identifier.otherhttp://dissertations.umi.com/cornellgrad:10322
dc.identifier.otherbibid: 10361523
dc.identifier.urihttps://hdl.handle.net/1813/56846
dc.description.abstractThis thesis presents a series of theoretical studies of ultra cold atomic systems which model and propose experiments, and develop new computational techniques in order to elucidate aspects of many-body physics and non-equilibrium dynamics. In the first two studies I model the dynamics of nonlinear solitonic excitations in ultracold fermionic superfluids: the first simulates recent experiments and supports the hypothesis that the solitons generated in those experiments are unstable to the formation of vortex rings; the second demonstrates how population imbalance between up and down spin fermions can be used to prevent this instability. In the next study I discuss a method for generating and probing topologically protected edge states using periodically driven optical lattices potentials. Next I use a perturbative approach to study the spectral density of fermions with strong attractive interactions in the normal phase. After that I develop a novel cluster expansion technique to model the dynamics of interacting fermions in a disordered optical lattice. Finally I apply a Ginzurg-Landau theory to model experimental studies of superfluid 3He embedded in nematically ordered aerogel, finding evidence for a new phase of matter --the ``polar phase"-- which is not seen in bulk 3He.
dc.language.isoen_US
dc.subjectPhysics
dc.subjectAtomic physics
dc.subjectCondensed matter physics
dc.titleMany-body physics and non-equilibrium dynamics in ultracold atomic systems
dc.typedissertation or thesis
thesis.degree.disciplinePhysics
thesis.degree.grantorCornell University
thesis.degree.levelDoctor of Philosophy
thesis.degree.namePh. D., Physics
dc.contributor.chairMueller, Erich
dc.contributor.committeeMemberGinsparg, Paul Henry
dc.contributor.committeeMemberParpia, Jeevak M.
dcterms.licensehttps://hdl.handle.net/1813/59810
dc.identifier.doihttps://doi.org/10.7298/X4CF9N7K


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