Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/41008
Título
Exact results for nonequilibrium dynamics in Wigner phase space
Año del Documento
2020
Documento Fuente
Physics Letters A 384 (2020) 126599
Resumen
We study time evolution of Wigner function of an initially interacting one-dimensional quantum gas following the switch-off of the interactions. For the scenario where at t=0the interactions are suddenly suppressed, we derive a relationship between the dynamical Wigner function and its initial value. A two-particle system initially interacting through two different interactions of Dirac delta type is examined. For a system of particles that is suddenly let to move ballistically (without interactions) in a harmonic trap in d dimensions, and using time evolution of one-body density matrix, we derive a relationship between the time dependent Wigner function and its initial value. Using the inverse Wigner transform we obtain, for an initially harmonically trapped noninteracting particles in ddimensions, the scaling law satisfied by the density matrix at time tafter a sudden change of the trapping frequency. Finally, the effects of interactions are analyzed in the dynamical Wigner function.
ISSN
0375-9601
Revisión por pares
SI
Patrocinador
Ministerio de Economía, Industria y Competitividad (grant MTM2014-57129-C2-1-P)
Junta de Castilla y León (grants BU229P18, VA057U16, and VA137G18)
Junta de Castilla y León (grants BU229P18, VA057U16, and VA137G18)
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
Aparece en las colecciones
Ficheros en el ítem
La licencia del ítem se describe como CC0 1.0 Universal