INVESTIGADORES
PASTAWSKI Horacio Miguel
artículos
Título:
Time fluctuations in isolated quantum systems of interacting particles
Autor/es:
AXEL D. DENTE; PABLO ZANGARA; E. J. TORRES-HERRERA; H. M. PASTAWSKI; ANÍBAL IUCCI ; LEA F. SANTOS
Revista:
PHYSICAL REVIEW E - STATISTICAL PHYSICS, PLASMAS, FLUIDS AND RELATED INTERDISCIPLINARY TOPICS
Editorial:
American Physical Society
Referencias:
Lugar: new york; Año: 2013 vol. 88 p. 32913 - 32924
ISSN:
1063-651X
Resumen:
PHYSICAL REVIEW E 88, 032913 (2013)Time fluctuations in isolated quantum systems of interacting particlesP.R. Zangara, A.D. Dente, E. J. Torres-Herrera, H.M. Pastawski,A.I., and L.F. SantosNumerically, we study the time fluctuations of few-body observables after relaxation in isolated dynamical quantum systems of interacting particles. Our results suggest that they decay exponentially with system size in both regimes, integrable and chaotic. The integrable systems considered are solvable with the Bethe ansatz and have a highly nondegenerate spectrum. This is in contrast with integrable Hamiltonians mappable to noninteractingones. We show that the coefficient of the exponential decay depends on the level of delocalization of the initial state with respect to the energy shell.