## Abstract A new perturbation approach is proposed that enhances the low‐order, perturbative convergence by modifying the zeroth‐order Hamiltonian in a manner that enlarges any small‐energy denominators that may otherwise appear in the perturbative expansion. This intruder state avoidance (ISA) me
Multi-partitioning quasidegenerate perturbation theory. A new approach to multireference Møller-Plesset perturbation theory
✍ Scribed by Andréi Zaitsevskii; Jean-Paul Malrieu
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 548 KB
- Volume
- 233
- Category
- Article
- ISSN
- 0009-2614
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