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A canonical sequence approach to the E ⊗ ε Jahn–Teller effect
Author(s) -
Fessatidis Vassilios,
Mancini Jay D.,
Bowen Samuel P.,
Massano William J.
Publication year - 2005
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.20538
Subject(s) - degenerate energy levels , jahn–teller effect , sequence (biology) , ground state , quantum , variety (cybernetics) , physics , quantum mechanics , statistical physics , simple (philosophy) , theoretical physics , mathematical physics , mathematics , chemistry , ion , biochemistry , statistics , philosophy , epistemology
We study the linear E ⊗ ε Jahn–Teller effect in which a doubly degenerate fermionic (electron) level is coupled to a pair of degenerate oscillators. Because of the relative simplicity of the model, and since a complete numerical solution has been known for a long time, theorists have had at their disposal an excellent proving ground for a variety of calculational efforts. Here we apply the recently developed canonical sequence method (CSM) of Šamaj et al. J Phys 1997, A30, 1741 to investigate the ground state of this system. Comparisons are then made with other calculation schemes. © 2005 Wiley Periodicals, Inc. Int J Quantum Chem, 2005