Semiclassical approach to fidelity amplitude

Mostrar todas las versiones(3)

The fidelity amplitude (FA) is a quantity of paramount importance in echo-type experiments. We use semiclassical theory to study the average FA for quantum chaotic systems under external perturbation. We explain analytically two extreme cases: the random dynamics limit-attained approximately by stro...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: García-Mata, I., Vallejos, R.O., Wisniacki, D.A.
Formato: Artículo publishedVersion
Publicado: 2011
Materias:
External perturbations
Fidelity amplitude
Lyapunov decay
Quantum chaotic systems
Random dynamics
Random perturbations
Semiclassical approaches
Semiclassical theories
Chaotic systems
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_13672630_v13_n_p_GarciaMata
https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_13672630_v13_n_p_GarciaMata_oai
Aporte de:
Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The fidelity amplitude (FA) is a quantity of paramount importance in echo-type experiments. We use semiclassical theory to study the average FA for quantum chaotic systems under external perturbation. We explain analytically two extreme cases: the random dynamics limit-attained approximately by strongly chaotic systems-and the random perturbation limit, which shows a Lyapunov decay. Numerical simulations help us to bridge the gap between both the extreme cases. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Ejemplares similares