Cătălin Paşcu Moca (Avtor), Miklós Antal Werner (Avtor), Angelo Valli (Avtor), Tomaž Prosen (Avtor), Gergely Zaránd (Avtor)

Povzetek

We explore the Kardar-Parisi-Zhang (KPZ) scaling in the one-dimensional Hubbard model, which exhibits global $SU_c(2) \otimes SU_s (2)$ symmetry at half filling, for the pseudocharge and the total spin. We analyze dynamical scaling properties of high-temperature charge and spin correlations and transport. At half filling, we observe a clear KPZ scaling in both charge and spin sectors. Away from half filling, the $SU_c(2)$ charge symmetry is reduced to $U_c(1)$, while the $SU_s(2)$ symmetry for the total spin is retained. Consequently, transport in the charge sector becomes ballistic, while KPZ scaling is preserved in the spin sector. These findings confirm the link between non-Abelian symmetries and KPZ scaling in the presence of integrability. We study two settings of the model: one involving a quench from a bipartitioned state asymptotically close to the $T = \infty$ equilibrium state of the system, and another where the system is coupled to two Markovian reservoirs at the two edges of the chain.

Ključne besede

fizika kondenzirane snovi;Hubbardov model;condensed matter physics;Hubbard model;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 538.9
COBISS: 191344643 Povezava se bo odprla v novem oknu
ISSN: 2469-9950
Št. ogledov: 11
Št. prenosov: 3
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: fizika kondenzirane snovi;Hubbardov model;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 235139-1-235139-13
Letnik: ǂVol. ǂ108
Zvezek: ǂiss. ǂ23
Čas izdaje: 2023
DOI: 10.1103/PhysRevB.108.235139
ID: 23341259