Marko Žnidarič (Avtor), Marko Ljubotina (Avtor)

Povzetek

Integrable models form pillars of theoretical physics because they allow for full analytical understanding. Despite being rare, many realistic systems can be described by models that are close to integrable. Therefore, an important question is how small perturbations influence the behavior of solvable models. This is particularly true for many-body interacting quantum systems where no general theorems about their stability are known. Here, we show that no such theorem can exist by providing an explicit example of a one-dimensional many-body system in a quasiperiodic potential whose transport properties discontinuously change from localization to diffusion upon switching on interaction. This demonstrates an inherent instability of a possible many-body localization in a quasiperiodic potential at small interactions. We also show how the transport properties can be strongly modified by engineering potential at only a few lattice sites.

Ključne besede

fizika kondenzirane snovi;kvantna mehanika;večdelčne lokalizacije;transport;kvaziperiodični sistemi;condensed matter physics;quantum mechanics;many-body localization;quasiperiodic systems;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 538.9:530.145
COBISS: 3201636 Povezava se bo odprla v novem oknu
ISSN: 0027-8424
Št. ogledov: 1065
Št. prenosov: 420
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: fizika kondenzirane snovi;kvantna mehanika;večdelčne lokalizacije;transport;kvaziperiodični sistemi;
Strani: str. 4595-4600
Letnik: ǂVol. ǂ115
Zvezek: ǂno. ǂ18
Čas izdaje: 2018
DOI: 10.1073/pnas.1800589115
ID: 10936187