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π-Electron systems: Recent developments in electronic spectroscopy and the PPP model

✍ Scribed by Josef Michl

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
575 KB
Volume
10
Category
Article
ISSN
0020-7608

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📜 SIMILAR VOLUMES

Correlation effects in the PPP model of
Correlation effects in the PPP model of alternant π-electronic systems: two-point Padé approximant approach
✍ J. ČÍŽek; A. Pellégatti; J. Paldus 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 955 KB

## Abstract A general procedure, based on the two‐point Padé approximant technique, is formulated, enabling an interpolation of the low‐lying energy levels of the PPP (Pariser–Parr–Pople) Hamiltonian over the divergency gap separating the asymptotic perturbation expansions in both strongly and weak