𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Double perturbation theory and symmetry

✍ Scribed by A.T. Amos; J.A. Yoffe

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
430 KB
Volume
31
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

A formulation of double perturbation theory is described which allows symmetry to be included in those cases where the z,ereorder hamiltonian does not contiin the full symmetry of the problem. As an example-we apply the fl~cov to the Epstein-Johnson spin model.

1 .-Introduction 2. Theory Some years ago the problem of introducing sym-Suppose H is a hamiltonian which can be divided metry into perturbation tkory was the subject of into two parts so that H = Ho f F/where V is, in some many investigations.

πŸ“œ SIMILAR VOLUMES

Treatment of deviation from symmetry usi
Treatment of deviation from symmetry using generalized perturbation theory
✍ H. Friedmann; U. Landman πŸ“‚ Article πŸ“… 1967 πŸ› Elsevier Science 🌐 English βš– 216 KB

A partitioning technique is developed according to which the Hamiltonian is split into an unperturbed part, which is totally symmetrica with respect to a chosen group of symmetry operations and a symmetry-breaking perturbation coupling the states of different symmetries. Various consequences. applic