Short-time decay of the Loschmidt echo

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Short-time decay of the Loschmidt echo was discussed. It is used to measure the sensitivity to perturbations of quantum evolutions. It was found that the characteristic time of the regime is well described by the inverse of the width of the local density of states.

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Detalles Bibliográficos
Autor principal: Wisniacki, D.A.
Formato: Artículo publishedVersion
Publicado: 2003
Materias:
Chaos theory
Hamiltonians
Perturbation techniques
Short-time decay
Quantum theory
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1063651X_v67_n12_p162051_Wisniacki
https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_1063651X_v67_n12_p162051_Wisniacki_oai
Aporte de:
Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Short-time decay of the Loschmidt echo was discussed. It is used to measure the sensitivity to perturbations of quantum evolutions. It was found that the characteristic time of the regime is well described by the inverse of the width of the local density of states.

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