Charge Gap in One-Dimensional Extended Hubbard Model |
| |
Authors: | DING Guo-Hui YE Fei XU Bo-Wei |
| |
Institution: | Department of Physics, Shanghai Jiao Tong University,
Shanghai 200030, China |
| |
Abstract: | By using the bosonization and renormalization group methods, we have studied the low energy physical properties in one-dimensional extended Hubbard model. The formation of charge and spin gaps is investigated at the half-filled electron band. An analytical expression for the charge gap in terms of the Coulomb repulsive interaction strength U and the nearest-neighbour interaction parameter V is obtained. |
| |
Keywords: | extended Hubbard model bosonization |
本文献已被 万方数据 等数据库收录! |
| 点击此处可从《理论物理通讯》浏览原始摘要信息 |
| 点击此处可从《理论物理通讯》下载免费的PDF全文 |