Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
DY: Fachverband Dynamik und Statistische Physik
DY 53: Poster Quantum Systems
DY 53.10: Poster
Donnerstag, 4. April 2019, 15:00–18:00, Poster B2
Equilibration and thermalization in the XXZ model — •Philipp Jaeger1,2, Andreas Klümper2, and Jesko Sirker1 — 1University of Manitoba, Department of Physics and Astronomy, Winnipeg, MB, Canada — 2Bergische Universität Wuppertal, Fachbereich C - Fachgruppe Physik, Wuppertal, Germany
The quantum XXZ model is an integrable lattice model, hence exact solutions are available via Bethe ansatz (BA). For many ground-state properties or correlation functions, explicit expressions are available. Expectation values of observables at late times after a quench can be calculated for example using the generalized Gibbs ensemble (GGE) formalism. However, particular dynamical correlation functions (DCF) are notoriously hard to calculate from BA, and perturbations of the XXZ model can not be treated directly. Using numerics, it is possible both to obtain DCF relatively easy and to include perturbations. Here, we present numerical results obtained employing the light-cone renormalization group algorithm.