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Entanglement evolution and generalised hydrodynamics: noninteracting systems
ID Bertini, Bruno (Avtor), ID Fagotti, Maurizio (Avtor), ID Piroli, Lorenzo (Avtor), ID Calabrese, Pasquale (Avtor)

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Izvleček
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.

Jezik:Angleški jezik
Ključne besede:non-equilibrium dynamics, many-body systems, quantum entanglement, quantum transport
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FMF - Fakulteta za matematiko in fiziko
Status publikacije:Objavljeno
Različica publikacije:Recenzirani rokopis
Leto izida:2018
Št. strani:12 str.
Številčenje:Vol. 51, art. no. 39LT01
PID:20.500.12556/RUL-105245 Povezava se odpre v novem oknu
UDK:530.145
ISSN pri članku:1751-8113
DOI:10.1088/1751-8121/aad82e Povezava se odpre v novem oknu
COBISS.SI-ID:3265380 Povezava se odpre v novem oknu
Datum objave v RUL:14.11.2018
Število ogledov:1130
Število prenosov:512
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Gradivo je del revije

Naslov:Journal of physics : Mathematical and theoretical
Skrajšan naslov:J. phys., A, Math. theor.
Založnik:IOP Publishing
ISSN:1751-8113
COBISS.SI-ID:3692314 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:neravnovesna dinamika, večdelčni sistemi, kvantna prepletenost, kvantni transport

Projekti

Financer:EC - European Commission
Program financ.:H2020
Številka projekta:694544
Naslov:Open many-body non-equilibrium systems
Akronim:OMNES

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