求解Hubbard线性系统的快速稳定算法

A FAST AND ROBUST ALGORITHM FOR SOLVING THE HUBBARD LINEAR SYSTEM

求解Hubbard线性系统是材料物理中DQMC/HQMC模型的核心问题之一,本文讨论了Hubbard矩阵的结构,然后给出了当能量参数U=O的情况下快速稳定求解Hubbard线性系统的算法.数值实验说明了方法的有效性.

Solving the Hubbard linear system is one of the key problems in the DQMC/HQMC model arising from material Physics. In the paper we discuss the structure of the Hubbard matrix, and then propose a fast and robust algorithm when the energy parameter U = 0. The numerical examples show that the proposed method is efficient and effective.