𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the Connection Between the Resolvent Methods and Partitioning Technique, Rational Approximations, and Perturbation Theory

✍ Scribed by Löwdin, Per-Olov


Book ID
126278897
Publisher
Royal Swedish Academy of Sciences
Year
1985
Tongue
English
Weight
182 KB
Volume
32
Category
Article
ISSN
0031-8949

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Connections between perturbation theory
✍ Paul Westhaus 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 492 KB

## 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

Connections between perturbation theory
✍ Paul Westhaus 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 578 KB

## Abstract We continue to examine the connection between perturbation theory and the Van Vleck unitary transformation. Here we illustrate the formalism derived earlier by applying it to compute the stationary states of the perturbed harmonic oscillator. We find that each solution of the traditiona