J Daligault and C Guet 2003 J. Phys. A: Math. Gen. 36 5847 doi:10.1088/0305-4470/36/22/304
J Daligault1 and C Guet2
Show affiliationsWe present a theoretical model that allows us to study linear and non-linear aspects of the femtosecond electron dynamics in metal clusters. The theoretical approach consists in the classical limit of the time-dependent Kohn–Sham equations. The electrons are described by a phase-space distribution function which satisfies a Vlasov-like equation while the ions are treated classically. This allows simulations for clusters containing several hundreds of atoms and extending up to several hundreds of femtoseconds during which the description conserves the fermionic character of the electron distribution. This semi-quantal approach compares very well with the purely quantal treatment. As an application of this approach, we show the prominent role of the electron dynamics during and after the interaction with an intense femtosecond laser pulse.
35Q40 Equations from quantum mechanics
81S30 Phase space methods including Wigner distributions, etc.
Issue 22 (6 June 2003)
Received 18 October 2002, in final form 20 February 2003
Published 22 May 2003
J Daligault and C Guet 2003 J. Phys. A: Math. Gen. 36 5847
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