Energy spectrum of localized quasiparticles renormalized by multi-phonon processes at finite temperature
The theory of renormalized energy spectrum of localized quasi-particle interacting with polarization phonons at finite temperature is developed within the Feynman-Pines diagram technique. The created computer program effectively takes into account multi-phonon processes, exactly defining all diagr...
Збережено в:
| Дата: | 2017 |
|---|---|
| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2017
|
| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/157114 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Energy spectrum of localized quasiparticles renormalized by multi-phonon processes at finite temperature / M.V. Tkach, O.Yu. Pytiuk, O.M. Voitsekhivska, Ju.O. Seti // Condensed Matter Physics. — 2017. — Т. 20, № 4. — С. 43706: 1–16. — Бібліогр.: 23 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The theory of renormalized energy spectrum of localized quasi-particle interacting with polarization phonons at
finite temperature is developed within the Feynman-Pines diagram technique. The created computer program
effectively takes into account multi-phonon processes, exactly defining all diagrams of mass operator together
with their analytical expressions in arbitrary order over the coupling constant. Now it is possible to separate the
pole and non-pole mass operator terms and perform a partial summing of their main terms. The renormalized
spectrum of the system is obtained within the solution of dispersion equation in the vicinity of the main state
where the high- and low-energy complexes of bound states are observed. The properties of the spectrum are
analyzed depending on the coupling constant and the temperature. |
|---|