Relativistic Perturbation Theory Formalism to Computing Spectra and Radiation Characteristics: Application to Heavy Elements
Fundamentals of gauge-invariant relativistic many-body perturbation theory (PT) with optimized ab initio zeroth approximation in theory of relativistic multi-electron systems are presented. The problem of construction of optimal one-electron representation is directly linked with a problem of the co...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Ebooks |
| Published: |
IntechOpen,
2017-06-14.
|
| Subjects: | |
| Online Access: | Get Online |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| LEADER | 02792 am a22002653u 4500 | ||
|---|---|---|---|
| 001 | intechopen_books_5863 | ||
| 042 | |a dc | ||
| 100 | 1 | 0 | |a Glushkov, Alexander V. |e author |
| 700 | 1 | 0 | |a Khetselius, Olga Yu. |e author |
| 700 | 1 | 0 | |a Svinarenko, Andrey A. |e author |
| 700 | 1 | 0 | |a Buyadzhi, Vasily V. |e author |
| 700 | 1 | 0 | |a Ternovsky, Valentin B. |e author |
| 700 | 1 | 0 | |a Kuznetsova, Anna A. |e author |
| 700 | 1 | 0 | |a Bashkarev, Petr G. |e author |
| 245 | 0 | 0 | |a Relativistic Perturbation Theory Formalism to Computing Spectra and Radiation Characteristics: Application to Heavy Elements |
| 260 | |b IntechOpen, |c 2017-06-14. | ||
| 500 | |a https://mts.intechopen.com/articles/show/title/relativistic-perturbation-theory-formalism-to-computing-spectra-and-radiation-characteristics-applic | ||
| 520 | |a Fundamentals of gauge-invariant relativistic many-body perturbation theory (PT) with optimized ab initio zeroth approximation in theory of relativistic multi-electron systems are presented. The problem of construction of optimal one-electron representation is directly linked with a problem of the correct accounting for multielectron exchange-correlation effects and gauge-invariance principle fulfilling in atomic calculations. New approach to construction of optimal PT zeroth approximation is based on accurate treating the lowest order multielectron effects, in particular, the gauge-dependent radiative contribution for the certain class of photon propagator (for instance, the Coulomb, Feynman, Babushkin ones) gauge. This value is considered to be a typical representative of important multielectron exchange-correlation effects, whose minimization is a reasonable criteria in the searching for optimal PT one-electron orbital basis. This procedure derives an undoubted profit in the routine many-body calculations as it provides the way of refinement of the atomic characteristics calculations, based on the "first principles". The relativistic density-functional approximation is taken as the zeroth one. There have taken into account all exchange-correlation corrections of the second order and dominated classes of the higher orders diagrams (polarization interaction, quasiparticles screening, etc.). New form of multi-electron polarization functional is used. As illustration, the results of computing energies, transition probabilities for some heavy ions are presented. | ||
| 540 | |a https://creativecommons.org/licenses/by/3.0/ | ||
| 546 | |a en | ||
| 690 | |a Recent Studies in Perturbation Theory | ||
| 655 | 7 | |a Chapter, Part Of Book |2 local | |
| 786 | 0 | |n https://www.intechopen.com/books/5863 | |
| 787 | 0 | |n ISBN:978-953-51-3261-5 | |
| 856 | \ | \ | |u https://mts.intechopen.com/articles/show/title/relativistic-perturbation-theory-formalism-to-computing-spectra-and-radiation-characteristics-applic |z Get Online |