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

Chihiro Matsui (Avtor), Tomaž Prosen (Avtor)

Povzetek

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.

Ključne besede

kvantna mehanika;spinski modeli;kvantne verige;quantum mechanics;spin models;quantum chains;

Podatki

Jezik:	Angleški jezik
Leto izida:	2017
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FMF - Fakulteta za matematiko in fiziko
Založnik:	IOP Publishing Ltd
UDK:	530.145
COBISS:	3178084
ISSN:	1751-8113
Št. ogledov:	776
Št. prenosov:	564
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	kvantna mehanika;spinski modeli;kvantne verige;
Konec prepovedi (OpenAIRE):	2018-08-21
Strani:	16 str.
Letnik:	ǂVol. ǂ50
Zvezek:	ǂart. no. ǂ385201
Čas izdaje:	2017
DOI:	10.1088/1751-8121/aa82db
ID:	10915631