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Perturbation theory in the spin hamiltonian method

✍ Scribed by A. A. Ovchinnikov; V. O. Cheranovskii

Book ID: 112356653
Publisher: Springer
Year: 1980
Tongue: English
Weight: 427 KB
Volume: 16
Category: Article
ISSN: 0040-5760
DOI: 10.1007/bf00515986

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## Abstract The connections between open shell Brillouin–Wigner perturbation theory and the Van Vleck unitary transformation formalisms for generating effective Hamiltonians are explored. An explicit expression is obtained relating the generator __Ŝ__ of the unitary transformation __e__^__iŝ__^ wit