Ballistic spin transport in a periodically driven integrable quantum system

Ljubotina, Marko (avtor), Zadnik, Lenart (avtor), Prosen, Tomaž (avtor)

We demonstrate ballistic spin transport of an integrable unitary quantum circuit, which can be understood either as a paradigm of an integrable periodically driven (Floquet) spin chain, or as a Trotterized anisotropic (XXZ) Heisenberg spin-1/2 model. We construct an analytic family of quasi-local conservation laws that break the spin-reversal symmetry and compute a lower bound on the spin Drude weight which is found to be a fractal function of the anisotropy parameter. Extensive numerical simulations of spin transport suggest that this fractal lower bound is in fact tight.

• Jezik: Angleški jezik
• Ključne besede: quantum mechanics, quantum statistical mechanics, nonequilibrium statistical physics, ballistic transport, spin chains
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Leto izida: 2019
• Št. strani: Str. 150605-1-150605-6
• Številčenje: Vol. 122, iss. 15
• PID: 20.500.12556/RUL-107514
• UDK: 536.93
• ISSN pri članku: 0031-9007
• DOI: 10.1103/PhysRevLett.122.150605
• COBISS.SI-ID: 3303268
• Datum objave v RUL: 23.04.2019

LJUBOTINA, Marko, ZADNIK, Lenart in PROSEN, Tomaž, 2019, Ballistic spin transport in a periodically driven integrable quantum system. Physical review letters [na spletu]. 2019. Vol. 122, no. 15, p. 150605-1-150605–6. [Dostopano 8 april 2025]. DOI 10.1103/PhysRevLett.122.150605. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=107514

Gradivo je del revije

• Naslov: Physical review letters
• Skrajšan naslov: Phys. rev. lett.
• Založnik: American Physical Society
• ISSN: 0031-9007
• COBISS.SI-ID: 1282575

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kvantna mehanika, kvantna statistična mehanika, neravnovesna statistična fizika, balistični transport, spinske verige

Projekti

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