Multiconfigurational symmetrized-projector quantum Monte Carlo method for low-lying excited states of the Hubbard model

被引：7
|
作者：
Srinivasan, B
Ramasesha, S
Krishnamurthy, HR
机构：
[1] JAWAHARLAL NEHRU CTR ADV SCI RES, BANGALORE 560064, KARNATAKA, INDIA
[2] INDIAN INST SCI, DEPT PHYS, BANGALORE 560012, KARNATAKA, INDIA
来源：
PHYSICAL REVIEW B | 1996年 / 54卷 / 04期
关键词：
D O I：
10.1103/PhysRevB.54.R2276
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We develop a multiconfigurational symmetrized-projector quantum Monte Carlo (MSPQMC) method to calculate excited-state properties of Hubbard models. We compare the MSPQMC results for finite Hubbard chains with exact results (where available) of with density-matrix renormalization-group results for longer chains. The energies and correlation functions of the excited states are in good agreement with those obtained from the alternate techniques.
引用
收藏
页码：R2276 / R2279
页数：4
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