Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling
The partial summing of infinite range of diagrams for the two-phonon mass operator of polaron described by Frohlich Hamiltonian is performed using the Feynman-Pines diagram technique. The renormalized spectral parameters of ground and first excited (phonon repeat) polaron state are accurately calcul...
Збережено в:
| Дата: | 2015 |
|---|---|
| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2015
|
| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/155268 |
| 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: | Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling / M.V. Tkach, Ju.O. Seti, O.M. Voitsekhivska, O.Yu. Pytiuk // Condensed Matter Physics. — 2015. — Т. 18, № 3. — С. 33707: 1–12 . — Бібліогр.: 28 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-155268 |
|---|---|
| record_format |
dspace |
| spelling |
irk-123456789-1552682019-06-17T01:27:03Z Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling Tkach, M.V. Seti, Ju.O. Voitsekhivska, O.M. Pytiuk, O.Yu. The partial summing of infinite range of diagrams for the two-phonon mass operator of polaron described by Frohlich Hamiltonian is performed using the Feynman-Pines diagram technique. The renormalized spectral parameters of ground and first excited (phonon repeat) polaron state are accurately calculated for the weak electron-phonon coupling at T=0 K. It is shown that the stronger electron-phonon interaction shifts the energy of both states into low-energy region of the spectra. The ground state stays stationary and the excited one - decays at bigger coupling constant. Методом дiаграмної технiки Фейнмана-Пайнса виконано парцiальне пiдсумовування безмежного ряду дiаграм двофононного масового оператора полярона, що описується гамiльтонiаном Фрeлiха. Перенормованi спектральнi параметри основного та першого збудженого поляронного стану (фононного повторення) коректно розрахованi для електрон-фононної системи зi слабким зв’язком при T = 0 К. Показано, що сильнiша електрон-фононна взаємодiя змiщує енергiї обох станiв у низькоенергетичну область спектра. Основний стан залишається стацiонарним, а загасання збудженого — зростає при збiльшеннi константи зв’язку. 2015 Article Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling / M.V. Tkach, Ju.O. Seti, O.M. Voitsekhivska, O.Yu. Pytiuk // Condensed Matter Physics. — 2015. — Т. 18, № 3. — С. 33707: 1–12 . — Бібліогр.: 28 назв. — англ. 1607-324X DOI:10.5488/CMP.18.33707 arXiv:1510.06912 PACS: 71.38.-k, 63.20.kd, 63.20.dk, 72.10.Di http://dspace.nbuv.gov.ua/handle/123456789/155268 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
The partial summing of infinite range of diagrams for the two-phonon mass operator of polaron described by Frohlich Hamiltonian is performed using the Feynman-Pines diagram technique. The renormalized spectral parameters of ground and first excited (phonon repeat) polaron state are accurately calculated for the weak electron-phonon coupling at T=0 K. It is shown that the stronger electron-phonon interaction shifts the energy of both states into low-energy region of the spectra. The ground state stays stationary and the excited one - decays at bigger coupling constant. |
| format |
Article |
| author |
Tkach, M.V. Seti, Ju.O. Voitsekhivska, O.M. Pytiuk, O.Yu. |
| spellingShingle |
Tkach, M.V. Seti, Ju.O. Voitsekhivska, O.M. Pytiuk, O.Yu. Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling Condensed Matter Physics |
| author_facet |
Tkach, M.V. Seti, Ju.O. Voitsekhivska, O.M. Pytiuk, O.Yu. |
| author_sort |
Tkach, M.V. |
| title |
Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling |
| title_short |
Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling |
| title_full |
Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling |
| title_fullStr |
Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling |
| title_full_unstemmed |
Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling |
| title_sort |
renormalized energy of ground and first excited state of fröhlich polaron in the range of weak coupling |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2015 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/155268 |
| citation_txt |
Renormalized energy of ground and first excited state of Fröhlich polaron in the range of weak coupling / M.V. Tkach, Ju.O. Seti, O.M. Voitsekhivska, O.Yu. Pytiuk // Condensed Matter Physics. — 2015. — Т. 18, № 3. — С. 33707: 1–12
. — Бібліогр.: 28 назв. — англ. |
| series |
Condensed Matter Physics |
| work_keys_str_mv |
AT tkachmv renormalizedenergyofgroundandfirstexcitedstateoffrohlichpolaronintherangeofweakcoupling AT setijuo renormalizedenergyofgroundandfirstexcitedstateoffrohlichpolaronintherangeofweakcoupling AT voitsekhivskaom renormalizedenergyofgroundandfirstexcitedstateoffrohlichpolaronintherangeofweakcoupling AT pytiukoyu renormalizedenergyofgroundandfirstexcitedstateoffrohlichpolaronintherangeofweakcoupling |
| first_indexed |
2023-05-20T17:46:30Z |
| last_indexed |
2023-05-20T17:46:30Z |
| _version_ |
1796154062382563328 |