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dc.contributor.advisor Kehrein, Stefan Prof. Dr.
dc.contributor.author Biebl, Fabian Ralf Anton
dc.date.accessioned 2017-01-16T09:47:33Z
dc.date.available 2017-01-16T09:47:33Z
dc.date.issued 2017-01-16
dc.identifier.uri http://hdl.handle.net/11858/00-1735-0000-002B-7D11-6
dc.language.iso eng de
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc 530 de
dc.title Thermalization in one-dimensional quantum-many-body systems de
dc.type doctoralThesis de
dc.contributor.referee Kehrein, Stefan Prof. Dr.
dc.date.examination 2016-12-14
dc.subject.gok Physik (PPN621336750) de
dc.description.abstracteng We consider the thermalization of the momentum distribution in two one-dimensional models. The first one is the integrable Hubbard model with an additional integrability breaking term in the Hamiltonian, which is a next-to-nearest-neighbor hopping term. This has been previously investigated by Fürst et al. (PRE 86:031122, 2012; PRE 88:012108, 2013). They considered several initial quasiparticle momentum distributions and their relaxation times for different strengths of the next-to-nearest-neighbor hopping amplitude. We find the dependence of the thermalization rates on the model parameters, on the filling and on temperature for any initial quasiparticle momentum distribution in the regime of small integrability breaking using a Boltzmann equation. The second model is an effective model describing a chain of manganite octahedra. There, we investigate a the temperature dependence of the relaxation rates for reasonable choices of the model parameters and the filling. de
dc.contributor.coReferee Blöchl, Peter E. Prof. Dr.
dc.contributor.thirdReferee Kree, Reiner Prof. Dr.
dc.contributor.thirdReferee Manmana, Salvatore R. PD Dr.
dc.contributor.thirdReferee Mathias, Stefan Prof. Dr.
dc.contributor.thirdReferee Volkert, Cynthia Prof. Dr.
dc.subject.eng thermalization de
dc.subject.eng Boltzmann equation de
dc.subject.eng Hubbard model de
dc.subject.eng non-equilibrium de
dc.subject.eng condensed matter de
dc.subject.eng electrons de
dc.subject.eng manganites de
dc.identifier.urn urn:nbn:de:gbv:7-11858/00-1735-0000-002B-7D11-6-7
dc.affiliation.institute Fakultät für Physik de
dc.identifier.ppn 876973160

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