Helium atom in an external electric field: Exact diagonalization

• Published in: Физика низких температур
• Date: 2014
• Main Authors: Antsygina, T.N., Chishko, K.A.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2014
• Subjects: Квантовые жидкости и квантовые кpисталлы
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/119653
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Helium atom in an external electric field: Exact diagonalization / T.N. Antsygina, K.A. Chishko // Физика низких температур. — 2014. — Т. 40, № 9. — С. 1035-1044. — Бібліогр.: 50 назв. — англ.

An exact diagonalization method is applied to solve the quantum-mechanical problem of spinless helium atom in an external electric field of arbitrary magnitude. The basis set for two-electron problem is built from different pair combinations ψnalama(αra)ψnblbmb(αrb) of orthonormalized single-particl...