Bruno Bertini (Avtor), Maurizio Fagotti (Avtor), Lorenzo Piroli (Avtor), Pasquale Calabrese (Avtor)

Povzetek

The large-scale properties of homogeneous states after quantum quenches in integrable systems have been successfully described by a semiclassical picture of moving quasiparticles. Here we consider the generalisation for the entanglement evolution after an inhomogeneous quench in noninteracting systems in the framework of generalised hydrodynamics. We focus on the protocol where two semi-infinite halves are initially prepared in different states and then joined together, showing that a proper generalisation of the quasiparticle picture leads to exact quantitative predictions. If the system is initially prepared in a quasistationary state, we find that the entanglement entropy is additive and it can be computed by means of generalised hydrodynamics. Conversely, additivity is lost when the initial state is not quasistationary; yet the entanglement entropy in the large-scale limit can be exactly predicted in the quasiparticle picture, provided that the initial state is low entangled.

Ključne besede

neravnovesna dinamika;večdelčni sistemi;kvantna prepletenost;kvantni transport;non-equilibrium dynamics;many-body systems;quantum entanglement;quantum transport;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 530.145
COBISS: 3265380 Povezava se bo odprla v novem oknu
ISSN: 1751-8113
Št. ogledov: 671
Št. prenosov: 344
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: neravnovesna dinamika;večdelčni sistemi;kvantna prepletenost;kvantni transport;
Konec prepovedi (OpenAIRE): 2019-08-24
Strani: 12 str.
Letnik: ǂVol. ǂ51
Zvezek: ǂart. no. ǂ39LT01
Čas izdaje: Aug. 2018
DOI: 10.1088/1751-8121/aad82e
ID: 10983888