Derivation of Line Shape Function in the Optical Conductivity by a New Diagram Method
A new diagram method for the line shape function in the optical conductivity formula is introduced and the result obtained applying the method to an electron-phonon system is compared with that derived using the projection-reduction method. The result satisfies the population criterion, which states...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2014/560287 |
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| _version_ | 1832562010561183744 |
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| author | Nam Lyong Kang Sang Don Choi |
| author_facet | Nam Lyong Kang Sang Don Choi |
| author_sort | Nam Lyong Kang |
| collection | DOAJ |
| description | A new diagram method for the line shape function in the optical conductivity formula is introduced and the result obtained
applying the method to an electron-phonon system is compared with that derived using the projection-reduction method. The result satisfies the population criterion, which states that the distribution functions for electrons and phonons should be combined in multiplicative forms and gives physical intuition to quantum dynamics of electrons in a solid. This method can be called the “KC diagram” method because it originates from the proper application of the Kang-Choi reduction identity and a state-dependent projection operator. |
| format | Article |
| id | doaj-art-d32ef83339414f029a3018d453e8c514 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-d32ef83339414f029a3018d453e8c5142025-02-03T01:23:42ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242014-01-01201410.1155/2014/560287560287Derivation of Line Shape Function in the Optical Conductivity by a New Diagram MethodNam Lyong Kang0Sang Don Choi1Department of Applied Nanoscience, Pusan National University, Miryang 627-706, Republic of KoreaDepartment of Physics, Kyungpook National University, Daegu 702-701, Republic of KoreaA new diagram method for the line shape function in the optical conductivity formula is introduced and the result obtained applying the method to an electron-phonon system is compared with that derived using the projection-reduction method. The result satisfies the population criterion, which states that the distribution functions for electrons and phonons should be combined in multiplicative forms and gives physical intuition to quantum dynamics of electrons in a solid. This method can be called the “KC diagram” method because it originates from the proper application of the Kang-Choi reduction identity and a state-dependent projection operator.http://dx.doi.org/10.1155/2014/560287 |
| spellingShingle | Nam Lyong Kang Sang Don Choi Derivation of Line Shape Function in the Optical Conductivity by a New Diagram Method Advances in Condensed Matter Physics |
| title | Derivation of Line Shape Function in the Optical Conductivity by a New Diagram Method |
| title_full | Derivation of Line Shape Function in the Optical Conductivity by a New Diagram Method |
| title_fullStr | Derivation of Line Shape Function in the Optical Conductivity by a New Diagram Method |
| title_full_unstemmed | Derivation of Line Shape Function in the Optical Conductivity by a New Diagram Method |
| title_short | Derivation of Line Shape Function in the Optical Conductivity by a New Diagram Method |
| title_sort | derivation of line shape function in the optical conductivity by a new diagram method |
| url | http://dx.doi.org/10.1155/2014/560287 |
| work_keys_str_mv | AT namlyongkang derivationoflineshapefunctionintheopticalconductivitybyanewdiagrammethod AT sangdonchoi derivationoflineshapefunctionintheopticalconductivitybyanewdiagrammethod |