Abstract
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.
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PACS
42.65.Re; 42.60.Fc
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Christov, I. Quantum trajectory perspective of atom–field interaction in attosecond time scale. Appl. Phys. B 85, 503–507 (2006). https://doi.org/10.1007/s00340-006-2466-9
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DOI: https://doi.org/10.1007/s00340-006-2466-9