Žiga Krajnik (Avtor), Johannes Schmidt (Avtor), Enej Ilievski (Avtor), Tomaž Prosen (Avtor)

Povzetek

Recent studies have found that fluctuations of magnetization transfer in integrable spin chains violate the central limit property. Here, we revisit the problem of anomalous counting statistics in the Landau-Lifshitz field theory by specializing to two distinct anomalous regimes featuring a dynamical critical point. By performing optimized numerical simulations using an integrable space-time discretization, we extract the algebraic growth exponents of time-dependent cumulants which attain their threshold values. The distinctly non-Gaussian statistics of magnetization transfer in the easy-axis regime is found to converge toward the universal distribution of charged single-file systems. At the isotropic point, we infer a weakly non-Gaussian distribution, corroborating the view that superdiffusive spin transport in integrable spin chains does not belong to any known dynamical universality class.

Ključne besede

statistična mehanika;statistical mechanics;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 536.9
COBISS: 191507715 Povezava se bo odprla v novem oknu
ISSN: 0031-9007
Št. ogledov: 9
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: statistična mehanika;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 017101-1-017101-7
Letnik: ǂVol. ǂ132
Zvezek: ǂiss. ǂ1
Čas izdaje: 2024
DOI: 10.1103/PhysRevLett.132.017101
ID: 23349883