C. Karrasch (Author), Tomaž Prosen (Author), F. Heidrich-Meisner (Author)

Abstract

Integrable models such as the spin-1/2 Heisenberg chain, the Lieb-Liniger, or the one-dimensional Hubbard model are known to avoid thermalization, which was also demonstrated in several quantum-quench experiments. Another dramatic consequence of integrability is the zero-frequency anomaly in transport coefficients, which results in ballistic finite-temperature transport, despite the presence of strong interactions. While this aspect of nonergodic dynamics has been known for a long time, there has so far not been any unambiguous experimental realization thereof. We make a concrete proposal for the observation of ballistic transport via local quantum-quench experiments in fermionic quantum-gas microscopes. Such an experiment would also unveil the coexistence of ballistic and diffusive transport channels in one and the same system and provide a means of measuring finite-temperature Drude weights. The connection between local quenches and linear-response functions is established via time-dependent Einstein relations.

Keywords

kvantna mehanika;quantum mechanics;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FMF - Faculty of Mathematics and Physics
Publisher: American Physical Society
UDC: 530.145
COBISS: 3106148 Link will open in a new window
ISSN: 2469-9950
Views: 1061
Downloads: 711
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Other data

Secondary language: Slovenian
Secondary keywords: kvantna mehanika;
Type (COBISS): Scientific work
Pages: str. 060406-1-060406-6
Volume: ǂVol. ǂ95
Issue: ǂiss. ǂ6
Chronology: 2017
DOI: 10.1103/PhysRevB.95.060406
ID: 10850714