Dresden 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 36: Many-body Systems: Equilibration, Chaos and Localization II (joint session DY/TT)

TT 36.11: Vortrag

Mittwoch, 18. März 2020, 12:15–12:30, HÜL 186

Disorder-free localization in an interacting two-dimensional lattice gauge theory — •Petr Karpov1,2, Roberto Verdel1, Yi-Ping Huang1,3, Markus Schmitt1,4, and Markus Heyl11Max Planck Institute for the Physics of Complex Systems, Noethnitzer Str. 38, Dresden 01187, Germany — 2National University of Science and Technology “MISiS”, Moscow, Russia — 3The Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen, Switzerland — 4University of California, Berkeley, California 94720, USA

Recently, disorder-free localization has been introduced as a new mechanism for ergodicity breaking in homogeneous systems caused by local constraints imposed by gauge invariance [1,2]. Here, we show that disorder-free localization can occur in genuinely interacting systems in two spatial dimensions. Specifically, we show that the quantum link model can become nonergodic by providing a strict bound on the localization-delocalization transition through an unconventional classical percolation problem. We investigate the quantum dynamics in this system by means of an improved classical network description [3] endowed with a time-dependent variational principle.

[1] A. Smith, J. Knolle, D.L. Kovrizhin, and R. Moessner, Phys. Rev. Lett. 118, 266601 (2017).

[2] M. Brenes, M. Dalmonte, M. Heyl, and A. Scardicchio, Phys. Rev. Lett. 120, 030601 (2018).

[3] M. Schmitt and M. Heyl, SciPost Phys. 4, 013 (2018).

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2020 > Dresden