Hannover 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

A: Fachverband Atomphysik

A 25: Interaction with strong or short laser pulses II

A 25.3: Vortrag

Mittwoch, 2. März 2016, 15:15–15:30, f107

Exact simulation of intense-laser-driven helium using TDRNOT — •Julius Rapp, Martins Brics, and Dieter Bauer — Universität Rostock, Germany

Recently-introduced time-dependent renormalized-natural-orbital theory (TDRNOT) [1-4] is a method to simulate correlated dynamics of few-body quantum systems. In the case of two particles, the exact equations of motion for the natural orbitals are explicitly known [2]. Using the common 1D He model as a test case, TDRNOT has been proven to capture laser-atom-interaction phenomena including double excitation followed by autoionization [1], resonant interaction [2], non-sequential double ionization [3], and high-harmonic generation [4] with proper accuracy.

The extension to 3D is conceptionally simple and yet very desirable since it enables one to combine theoretical and experimental techniques when studying correlated electron dynamics. After an introduction to TDRNOT, this talk concerns the progress on reproducing the 1D benchmark results in full dimensionality.

We also compare effort and gain of TDRNOT to the imposing exact 3D two-electron calculations presented in Ref. [5].

[1] M. Brics and D. Bauer, Phys. Rev. A 88, 052514 (2013)
[2] J. Rapp, M. Brics, and D. Bauer, Phys. Rev. A 90, 012518 (2014)
[3] M. Brics, J. Rapp, and D. Bauer, Phys. Rev. A 90, 053418 (2014)
[4] M. Brics, J. Rapp, and D. Bauer, arXiv:1510.01682 (2015)
[5] A. Zielinski, V. Majety, and A. Scrinzi, arXiv:1511.06655 (2015)