Date and time: Friday, December 2, 2016, 15:30 – 17:30
Venue:   Room #502, Eng.-Bldg. 8,  The University of Tokyo  (http://www.u-tokyo.ac.jp/campusmap/cam01_04_09_j.html)
*Admission free, no registration required.

Speaker 1: Dr. Pascal Krause (Institute of Chemistry, University Potsdam)

Title: Time-Dependent Configuration Interaction with an Absorbing Potential — Angle-dependent Ionization & High Harmonic Generation Spectra

Abstract: The strong field ionization has been studied for several molecules by time-dependent configuration interaction with an absorbing potential (TDCIS-CAP). The method employs an atom-centered basis set and can be applied to simulate electron dynamics and ionization in multi-electron polyatomic molecules. The presentation will address the calculation of angle-dependent ionization of small molecules as well as possibilities of simulating HHG spectra with TDCIS-CAP.

References: P. Krause and H.B. Schlegel, J. Phys. Chem. Lett. 6, 2140 (2015)

Speaker 2: Fabian Lackner (Institute for Theoretical Physics, Vienna University of Technology)

Title: Time-dependent two-particle reduced density matrix theory: Application to high-harmonic generation

Abstract: Calculating the dynamics of correlated quantum many-body systems is one of the great challenges of modern theoretical physics. Methods that have a polynomial scaling with particle number are required to address larger systems. We propose an efficient and accurate method based on the propagation of the two-particle reduced density matrix (TD-2RDM). We benchmark this approach by a comparison with multi-configurational time-dependent Hartree-Fock (MCTDHF) results for the harmonic spectra of Beryllium and Neon within a fully three-dimensional setup. We show that the TD-2RDM method is well-suited to describe the non-linear atomic response and to reveal the influence of electronic correlation effects.

References: F. Lackner, I. Břesinová, T. Sato, K. L. Ishikawa, and J. Burgdörfer, Phys. Rev. A 91, 023412 (2015)
F. Lackner, I. Břesinová, T. Sato, K. L. Ishikawa, and J. Burgdörfer, arXiv:1611.00888 [physics.atom-ph] (2016)

Contact
Professor Kenichi Ishikawa, Dept. of Nuclear Engineering and Management,
Graduate School of Engineering, The Univesitiy of Tokyo
e-mail:  ishiken(at)n.t.u-tokyo.ac.jp