𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A second-quantization representation of the Epstein-Nesbet partitioning of the full hamiltonian

✍ Scribed by Vladimír Kvasnička

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
411 KB
Volume
43
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

A ~~ndqua~t~~tian

representation of the Epstein-Nesbet partit~n~~ of the total electronic ~rnjitonjan is suggested. In this approach, the unperturbed hamiltonian contains not only the one-particle orbital energies but also the Coulomb and corresponding exchange two-particle terms. Such a hamiltonian un advantageously be used in alI branches of the IXUSYbody diagrammatic perturbation theory for simple and correct inclusion of the diagonal ladder and ring diagrams in alI orders of perturbation theory.

📜 SIMILAR VOLUMES

Integral Representation of the Second Qu
Integral Representation of the Second Quantization via the Segal Duality Transform
✍ E.R. Negrin 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 420 KB

In this article we obtain an explicit integral representation of the Second Quantization. In concrete terms, we prove that the Segal duality transform maps 1(U ) in terms of an integral operator which extends the Wiener transform.

Representations of a sublattice of the p
Representations of a sublattice of the partition lattice on a lattice
✍ Ronny Rousseau 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 529 KB

A partial ordering is defined for monotone projections on a lattice, such that the set of these mappings is a lattice which is isomorphic to a sublattice of the partition lattice.

cover
A Hat Full of Sky: The Second Tiffany Aching Adventure
✍ Pratchett, Terry 📂 Fiction 📅 2005 🏛 HarperCollins Publishers 🌐 UND ⚖ 141 KB 👁 1 views

Something is coming after Tiffany ... Tiffany Aching is ready to begin her apprenticeship in magic. She expects spells and magic — not chores and ill-tempered nanny goats! Surely there must be more to witchcraft than this! What Tiffany doesn't know is that an insidious, disembodied creature is pur