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Transition between dissipatively stabilized helical states
Essink, Simon (Avtor), Wolff, Stefan (Avtor), Schütz, Gunter M. (Avtor), Kollath, Corinna (Avtor), Popkov, Vladislav (Avtor)

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Izvleček
We analyze a XXZ spin-1/2 chain which is driven dissipatively at its boundaries. The dissipative driving is modeled by Lindblad jump operators which only act on both boundary spins. In the limit of large dissipation, we find that the boundary spins are pinned to a certain value and at special values of the interaction anisotropy, the steady states are formed by a rank-2 mixture of helical states with opposite winding numbers. Contrarily to previous stabilizations of topological states, these helical states are not protected by a gap in the spectrum of the Lindbladian. By changing the anisotropy, the transition between these steady states takes place viamixed states of higher rank. In particular, crossing the value of zero anisotropy a totally mixed state is found as the steady state. The transition between the different winding numbers via mixed states can be seen in light of the transitions between different topological states in dissipatively driven systems. The results are obtained by developing a perturbation theory in the inverse dissipative coupling strength and using the numerical exact diagonalization and matrix product state methods.

Jezik:Angleški jezik
Ključne besede:quantum mechanics
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FMF - Fakulteta za matematiko in fiziko
Leto izida:2020
Št. strani:Str. 022007-1-022007-7
Številčenje:Vol. 2, iss. 2
UDK:530.145
ISSN pri članku:2643-1564
DOI:10.1103/PhysRevResearch.2.022007 Povezava se odpre v novem oknu
COBISS.SI-ID:25256707 Povezava se odpre v novem oknu
Število ogledov:203
Število prenosov:162
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Gradivo je del revije

Naslov:Physical review research
Založnik:American Phyisical Society
ISSN:2643-1564
COBISS.SI-ID:32822823 Povezava se odpre v novem oknu

Gradivo je financirano iz projekta

Financer:EC - European Commission
Program financ.:H2020
Številka projekta:694544
Naslov:Open Many-body Non-Equilibrium Systems
Akronim:OMNES

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:17.08.2020

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:kvantna mehanika

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