| Numéro |
J. Phys. II France
Volume 3, Numéro 4, April 1993
|
|
|---|---|---|
| Page(s) | 435 - 441 | |
| DOI | https://doi.org/10.1051/jp2:1993101 | |
DOI: 10.1051/jp2:1993101
J. Phys. II France 3 (1993) 435-441
Laboratory of Molecular Structure and Quantum Mechanics, Chemical Department, M. Lomonossov Moscow State University, 119899 Moscow GSP, Russia
31.15
© Les Editions de Physique 1993
J. Phys. II France 3 (1993) 435-441
Order-by-order expansions for intermediate Hamiltonians by the shift technique
A.V. ZaitsevskiiLaboratory of Molecular Structure and Quantum Mechanics, Chemical Department, M. Lomonossov Moscow State University, 119899 Moscow GSP, Russia
(Received 10 December 1992; accepted 16 February 1993)
Abstract
The level shift technique is applied to derive rigorous order-by-order intermediate Hamiltonian QDPT expansions. The novel
approach offers an insight into the relations between different intermediate Hamiltonian theories. The direct comparison with
the shifted QDPT expansions for conventional effective Hamiltonian is also presented.
31.15
© Les Editions de Physique 1993