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Slow Many-Body Delocalization beyond One Dimension

Doggen, Elmer V. H.; Gornyi, Igor V.; Mirlin, Alexander D.; Polyakov, Dmitry G.

Abstract (englisch):
We study the delocalization dynamics of interacting disordered hard-core bosons for quasi-1D and 2D geometries, with system sizes and timescales comparable to state-of-the-art experiments. The results are strikingly similar to the 1D case, with slow, subdiffusive dynamics featuring power-law decay. From the freezing of this decay we infer the critical disorder Wc(L,d) as a function of length L and width d. In the quasi-1D case Wc has a finite large-L limit at fixed d, which increases strongly with d. In the 2D case Wc(L,L) grows with L. The results are consistent with the avalanche picture of the many-body localization transition.

DOI: 10.1103/PhysRevLett.125.155701
Zitationen: 15
Zitationen: 14
Zugehörige Institution(en) am KIT Institut für Quantenmaterialien und -technologien (IQMT)
Institut für Theorie der Kondensierten Materie (TKM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2020
Sprache Englisch
Identifikator ISSN: 0031-9007, 1079-7114
KITopen-ID: 1000126345
HGF-Programm 43.21.01 (POF III, LK 01) Quantum Correlations in Condensed Matter
Erschienen in Physical review letters
Verlag American Physical Society (APS)
Band 125
Heft 15
Seiten Art.-Nr.: 155701
Vorab online veröffentlicht am 05.10.2020
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