Kehrein, Stefan K.

[["dc.bibliographiccitation.issue","22"],["dc.bibliographiccitation.journal","Physical Review B"],["dc.bibliographiccitation.volume","100"],["dc.contributor.author","Schnaack, Oskar"],["dc.contributor.author","Bölter, Niklas"],["dc.contributor.author","Paeckel, Sebastian"],["dc.contributor.author","Manmana, Salvatore R."],["dc.contributor.author","Kehrein, Stefan"],["dc.contributor.author","Schmitt, Markus"],["dc.date.accessioned","2020-12-10T18:20:22Z"],["dc.date.available","2020-12-10T18:20:22Z"],["dc.date.issued","2019"],["dc.identifier.arxiv","1808.05646"],["dc.identifier.doi","10.1103/PhysRevB.100.224302"],["dc.identifier.eissn","2469-9969"],["dc.identifier.issn","2469-9950"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75540"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B03 Relaxation, Thermalisierung, Transport und Kondensation in hochangeregten Festkörpern"],["dc.title","Tripartite information, scrambling, and the role of Hilbert space partitioning in quantum lattice models"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","Physical Review. B"],["dc.bibliographiccitation.volume","97"],["dc.contributor.author","Köhler, Thomas"],["dc.contributor.author","Rajpurohit, Sangeeta"],["dc.contributor.author","Schumann, Ole"],["dc.contributor.author","Paeckel, Sebastian"],["dc.contributor.author","Biebl, Fabian R. A."],["dc.contributor.author","Sotoudeh, Mohsen"],["dc.contributor.author","Kramer, Stephan C."],["dc.contributor.author","Blöchl, Peter E."],["dc.contributor.author","Kehrein, Stefan K."],["dc.contributor.author","Manmana, Salvatore R."],["dc.date.accessioned","2020-12-10T18:25:06Z"],["dc.date.available","2020-12-10T18:25:06Z"],["dc.date.issued","2018"],["dc.description.abstract","We investigate the evolution of a photoexcitation in correlated materials over a wide range of time scales. The system studied is a one-dimensional model of a manganite with correlated electron, spin, orbital, and lattice degrees of freedom, which we relate to the three-dimensional material Pr$_{1-x}$Ca$_{x}$MnO$_3$. The ground-state phases for the entire composition range are determined and rationalized by a coarse-grained polaron model. At half-doping a pattern of antiferromagnetically coupled Zener polarons is realized. Using time-dependent density-matrix renormalization group (tDMRG), we treat the electronic quantum dynamics following the excitation. The emergence of quasiparticles is addressed, and the relaxation of the nonequilibrium quasiparticle distribution is investigated via a linearized quantum-Boltzmann equation. Our approach shows that the magnetic microstructure caused by the Zener polarons leads to an increase of the relaxation times of the excitation."],["dc.identifier.arxiv","1610.07246v4"],["dc.identifier.doi","10.1103/PhysRevB.97.235120"],["dc.identifier.eissn","2469-9969"],["dc.identifier.issn","2469-9950"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75574"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B03 Relaxation, Thermalisierung, Transport und Kondensation in hochangeregten Festkörpern"],["dc.relation","SFB 1073 | Topical Area C | C03 Vom Elektronentransfer zur chemischen Energiespeicherung: ab-initio Untersuchungen korrelierter Prozesse"],["dc.relation.issn","2469-9950"],["dc.relation.issn","2469-9969"],["dc.title","Relaxation of photoexcitations in polaron-induced magnetic microstructures"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","165104"],["dc.bibliographiccitation.issue","16"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","89"],["dc.contributor.author","Essler, Fabian H. L."],["dc.contributor.author","Kehrein, Stefan"],["dc.contributor.author","Manmana, Salvatore R."],["dc.contributor.author","Robinson, N. J."],["dc.date.accessioned","2018-11-07T09:41:24Z"],["dc.date.available","2018-11-07T09:41:24Z"],["dc.date.issued","2014"],["dc.description.abstract","We consider quantum quenches in an integrable quantum chain with tuneable-integrability-breaking interactions. In the case where these interactions are weak, we demonstrate that at intermediate times after the quench local observables relax to a prethermalized regime, which can be described by a density matrix that can be viewed as a deformation of a generalized Gibbs ensemble. We present explicit expressions for the approximately conserved charges characterizing this ensemble. We do not find evidence for a crossover from the prethermalized to a thermalized regime on the time scales accessible to us. Increasing the integrability-breaking interactions leads to a behavior that is compatible with eventual thermalization."],["dc.identifier.doi","10.1103/PhysRevB.89.165104"],["dc.identifier.isi","000334111400002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33719"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B03 Relaxation, Thermalisierung, Transport und Kondensation in hochangeregten Festkörpern"],["dc.relation.issn","1550-235X"],["dc.relation.issn","1098-0121"],["dc.title","Quench dynamics in a model with tuneable integrability breaking"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]