2015年11月
Spherical-Harmonics Expansion Method for Density-Matrix Simulations of Quantum Electron Dynamics in Continuum States
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
- 巻
- 115
- 号
- 22
- 開始ページ
- 1587
- 終了ページ
- 1596
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/qua.24988
- 出版者・発行元
- WILEY-BLACKWELL
Spherical-harmonics expansion method is proposed to solve the quantum time-evolution equations for density matrices numerically in momentum space. This method facilitates efficient real-time simulations of quantum electron dynamics in continuum states through extension of our previous formalism developed for discrete states. Numerical accuracy and efficiency are demonstrated through two examples: (i) multiphoton ionization of a one-electron atom in intense laser field, and (ii) real-time dynamics of plasma oscillations in electron liquids. In case (i), coupled dynamics of density matrices for bound and continuum states reveals an enhancement of multiphoton ionization over the Keldysh approximation through resonant intermediate states. (C) 2015 Wiley Periodicals, Inc.
- リンク情報
- ID情報
-
- DOI : 10.1002/qua.24988
- ISSN : 0020-7608
- eISSN : 1097-461X
- Web of Science ID : WOS:000363880100003