Gauge-invariant time-dependent configuration interaction singles method: applications to high-harmonic generation from atoms

Autor:	T Sato, K L Ishikawa, T Teramura
Rok vydání:	2020
Předmět:	Physics High Energy Physics::Theory History High Energy Physics::Lattice Quantum mechanics High Energy Physics::Phenomenology High harmonic generation Configuration interaction Invariant (physics) Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 1412:082003
ISSN:	1742-6596 1742-6588
Popis:	Synopsis We present gauge-invariant reformulation of time-dependent configuration interaction singles (TDCIS) method and its applications to high-harmonic generation (HHG) from three-dimensional atoms. The conventional TDCIS method suffers from a violation of gauge-invariance, which prevents efficient simulations of high-field phenomena within the velocity gauge. In our reformulation, rotated velocity gauge transformed from the length gauge is employed instead of the velocity gauge. We simulate HHG from atoms and show gauge-invariance and performance of our rotated velocity gauge.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a8a3b0e7bf02d280a041f54c1dc08ed3 https://doi.org/10.1088/1742-6596/1412/8/082003 Zobrazit plný text záznamu