Applied Physics B

, Volume 85, Issue 4, pp 503–507 | Cite as

Quantum trajectory perspective of atom–field interaction in attosecond time scale

  • I.P. ChristovEmail author
Rapid communication


The ionization and high-harmonic generation in hydrogen and helium by using quantum (hydrodynamic) trajectories is analyzed theoretically. The quantum trajectories are introduced in the frame of a new time-dependent quantum Monte Carlo technique that allows a self-contained ab initio treatment of the electron correlation effects without introducing parametrized correlation potentials into the Schrödinger equation. Our approach predicts correct ionization, high-harmonic spectra, and attosecond pulses generated by a helium atom beyond the single active electron approximation. It can be used to study complex multi-electron systems in arbitrary dimensions and their interaction with laser fields of both low and high intensity.


Helium Atom Harmonic Spectrum Outer Electron Attosecond Pulse Quantum Trajectory 
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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Physics DepartmentUniversity of SofiaSofiaBulgaria

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