Construction of the steady state density matrix and quasilocal charges for the spin-1/2 XXZ chain with boundary magnetic fields

Matsui, Chihiro (avtor), Prosen, Tomaž (avtor)

We construct the nonequilibrium steady state (NESS) density operator of the spin-$1/2$ XXZ chain with non-diagonal boundary magnetic fields coupled to boundary dissipators. The Markovian boundary dissipation is found with which the NESS density operator is expressed in terms of the product of the Lax operators by relating the dissipation parameters to the boundary parameters of the spin chain. The NESS density operator can be expressed in terms of a non-Hermitian transfer operator (NHTO) which forms a commuting family of quasilocal charges. The optimization of the Mazur bound for the high temperature Drude weight is discussed by using the quasilocal charges and the conventional local charges constructed through the Bethe ansatz.

• Jezik: Angleški jezik
• Ključne besede: quantum mechanics, spin models, quantum chains
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Založnik: IOP Publishing Ltd
• Leto izida: 2017
• Št. strani: 16 str.
• Številčenje: Vol. 50, art. no. 385201
• PID: 20.500.12556/RUL-100072
• UDK: 530.145
• ISSN pri članku: 1751-8113
• DOI: 10.1088/1751-8121/aa82db
• COBISS.SI-ID: 3178084
• Datum objave v RUL: 02.03.2018

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

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kvantna mehanika, spinski modeli, kvantne verige

Projekti

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