English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/50711
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Nonlinear phenomena in time-dependent density-functional theory: What Rabi oscillations can teach us

AutorFuks, Johanna I.; Helbig, N. ; Tokatly, I. V. ; Rubio, Angel
Fecha de publicación2011
EditorAmerican Physical Society
CitaciónPhysical Review B 84(7): 075107 (2011)
ResumenThrough the exact solution of a two-electron singlet system interacting with a monochromatic laser we prove that all adiabatic density functionals within time-dependent density-functional theory are not able to discern between resonant and nonresonant (detuned) Rabi oscillations. This is rationalized in terms of a fictitious dynamical exchange-correlation (xc) detuning of the resonance while the laser is acting. The nonlinear dynamics of the Kohn-Sham system shows the characteristic features of detuned Rabi oscillations even if the exact resonant frequency is used. We identify the source of this error in a contribution from the xc functional to the set of nonlinear equations that describes the electron dynamics in an effective two-level system. The constraint of preventing the detuning introduces a new strong condition to be satisfied by approximate xc functionals.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.84.075107
URIhttp://hdl.handle.net/10261/50711
DOI10.1103/PhysRevB.84.075107
Identificadoresdoi: 10.1103/PhysRevB.84.075107
issn: 1098-0121
Aparece en las colecciones: (CFM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Nonlinear phenomena.pdf658,16 kBUnknownVisualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.