Pedro Ribeiro (Avtor), Tomaž Prosen (Avtor)

Povzetek

We consider a collective quantum spin s in contact with Markovian spin-polarized baths. Using a conserved superoperator charge, a differential representation of the Liouvillian is constructed to find its exact spectrum and eigenmodes. We study the spectral properties of the model in the large-s limit using a semiclassical quantization condition and show that the spectral density may diverge along certain curves in the complex plane.We exploit our exact solution to characterize steady-state properties, in particular at the discontinuous phase transition that arises for unpolarized environments, and to determine the decay rates of coherences and populations. Our approach provides a systematic way of finding integrable Liouvillian operators with nontrivial steady states as well as a way to study their spectral properties and eigenmodes.

Ključne besede

kvantna mehanika;odprti kvantni sistemi;statistična fizika;quantum mechanics;open quantum systems;statistical physics;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 530.145
COBISS: 3285348 Povezava se bo odprla v novem oknu
ISSN: 0031-9007
Št. ogledov: 910
Št. prenosov: 552
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: kvantna mehanika;odprti kvantni sistemi;statistična fizika;
Strani: str. 010401-1-010401-6
Letnik: ǂVol. ǂ122
Zvezek: ǂiss. ǂ1
Čas izdaje: 2019
DOI: 10.1103/PhysRevLett.122.010401
ID: 11002138