Quantum Singwi-Tosi-Land-Sjoelander (STLS) approach for interacting inhomogeneous systems under electromagnetic fields
POSTER
Abstract
As a natural extension of the original semi-classical STLS approach for an electron gas[1],
we derive the linear equation for response functions in a quantum mechanical manner[2] for inhomogeneous interacting electronic systems under a time-dependent electromagnetic perturbation.
In this study, we choose an analytically solvable interacting two-electron system as the target for which we examine the validity of the approximation.
We compare the STLS response function and the exact one.
The interaction energy calculated from the STLS response function is also discussed.
[1] K. S. Singwi, M. P. Tosi, R. H. Land, and A. Sjoelander, Phys. Rev. 176, 589 (1968)
[2] T. Hasegawa, and M. Shimizu, J. Phys. Soc. Jpn. 35, 18 (1973); T. Hasegawa and M. Shimizu, J. Phys. Soc. Jpn. 38, 965 (1975)
we derive the linear equation for response functions in a quantum mechanical manner[2] for inhomogeneous interacting electronic systems under a time-dependent electromagnetic perturbation.
In this study, we choose an analytically solvable interacting two-electron system as the target for which we examine the validity of the approximation.
We compare the STLS response function and the exact one.
The interaction energy calculated from the STLS response function is also discussed.
[1] K. S. Singwi, M. P. Tosi, R. H. Land, and A. Sjoelander, Phys. Rev. 176, 589 (1968)
[2] T. Hasegawa, and M. Shimizu, J. Phys. Soc. Jpn. 35, 18 (1973); T. Hasegawa and M. Shimizu, J. Phys. Soc. Jpn. 38, 965 (1975)
*This research was supported by MEXT as “Exploratory Challenge on Post-K computer” (Frontiers of Basic Science: Challenging the Limits). This research used computational resources of the K computer provided by the RIKEN Advanced Institute for Computational Science through the HPCI System Research project
Presenters
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Taichi Kosugi
- Department of Applied Physics, University of Tokyo
- The University of Tokyo