中国物理B ›› 2000, Vol. 9 ›› Issue (8): 615-618.doi: 10.1088/1009-1963/9/8/012
丁国辉, 叶飞, 许伯威
Ding Guo-hui (丁国辉), Ye Fei (叶飞), Xu Bo-wei (许伯威)
摘要: By using the bosonization and renormalization group methods, we have studied the low energy physical properties in the one-dimensional dimerized Hubbard model. The formation of charge and spin gaps is investigated both for the half-filled electron band and away from the half-filled band. The scaling laws of the charge and spin gaps with the dimerization parameterΔ and the repulsive interaction strength U are obtained.
中图分类号: (Band and itinerant models)