Universal attosecond response to the removal of an electron

When an electron is suddenly removed, a universal response of the system is shown to occur on an attosecond (10(-18) s) time scale. During this response time, which lasts about 50 attoseconds, the density of the created hole changes in a characteristic way. Explicit examples are shown. The results a...

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Veröffentlicht in:	Physical review letters 2005-01, Vol.94 (3), p.033901.1-033901.4, Article 033901
Hauptverfasser:	BREIDBACH, J, CEDERBAUM, L. S
Format:	Artikel
Sprache:	eng
Schlagworte:	Classical and quantum physics: mechanics and fields Exact sciences and technology Fundamental areas of phenomenology (including applications) Nonlinear optics Optics Physics Quantum computation Quantum information Ultrafast processes optical pulse generation and pulse compression
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Beschreibung
Zusammenfassung:	When an electron is suddenly removed, a universal response of the system is shown to occur on an attosecond (10(-18) s) time scale. During this response time, which lasts about 50 attoseconds, the density of the created hole changes in a characteristic way. Explicit examples are shown. The results are analyzed in terms of the eigenstates of the residual ion and related to the filling of the exchange-correlation hole associated with the electron in the ground state of the system by the remaining electrons.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.94.033901