Kehrein, Stefan K.

[["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","SciPost physics"],["dc.bibliographiccitation.volume","5"],["dc.contributor.author","Abeling, Nils O."],["dc.contributor.author","Cevolani, Lorenzo"],["dc.contributor.author","Kehrein, Stefan"],["dc.date.accessioned","2020-12-10T18:42:59Z"],["dc.date.available","2020-12-10T18:42:59Z"],["dc.date.issued","2018"],["dc.description.abstract","In non-relativistic quantum theories the Lieb-Robinson bound defines an effective light cone with exponentially small tails outside of it. In this work we use it to derive a bound for the time evolution of the correlation function of two local disjoint observables if the initial state has a power-law decay. We show that the exponent of the power-law of the bound is identical to the initial (equilibrium) decay. We explicitly verify this result by studying the full dynamics of the susceptibilities and correlations in the exactly solvable Luttinger model after a sudden quench from the non-interacting to the interacting model."],["dc.identifier.doi","10.21468/SciPostPhys.5.5.052"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78152"],["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.rights","CC BY 4.0"],["dc.title","Analysis of the buildup of spatiotemporal correlations and their bounds outside of the light cone"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","053003"],["dc.bibliographiccitation.journal","New Journal of Physics"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Wang, Pei"],["dc.contributor.author","Kehrein, Stefan"],["dc.date.accessioned","2018-11-07T10:14:27Z"],["dc.date.available","2018-11-07T10:14:27Z"],["dc.date.issued","2016"],["dc.description.abstract","Weidentify a new class of phase transitions when calculating the Hall conductance of two-band Chern insulators in the long-time limit after a global quench of the Hamiltonian. The Hall conductance is expressed as the integral of the Berry curvature in the diagonal ensemble. Even if the Chern number of the unitarily-evolving wave function is conserved, the Hall conductance as a function of the energy gap in the post-quench Hamiltonian displays a continuous but nonanalytic behavior, that is it has a logarithmically divergent derivative as the gap closes. The coefficient of this logarithmic function is the ratio of the change of the Chern number for the ground state of the post-quench Hamiltonian to the energy gap in the initial state. This nonanalytic behavior is universal in two-band Chern insulators."],["dc.identifier.doi","10.1088/1367-2630/18/5/053003"],["dc.identifier.isi","000377189800001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13380"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40619"],["dc.notes.intern","Merged from goescholar"],["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","1367-2630"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.title","Phase transitions in the diagonal ensemble of two-band Chern insulators"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]