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Symmetry projection to coupled-cluster singles plus doubles wave function through the Monte Carlo method
Physical Review C ( IF 3.1 ) Pub Date : 2021-09-22 , DOI: 10.1103/physrevc.104.l031305
Takahiro Mizusaki , Peter Schuck

A method for calculating the symmetry-projected energy of coupled-cluster singles plus doubles (CCSD) wave function through the Monte Carlo method is proposed. We present benchmark calculations in considering the three-level Lipkin model which is a simple and minimal model with two phases: spherical and deformed. It is demonstrated that this method gives good ground-state energy and low-lying spectra.

中文翻译:

通过蒙特卡罗方法对耦合簇单波加双波函数的对称投影

提出了一种通过蒙特卡罗方法计算耦合簇单加双(CCSD)波函数的对称投影能量的方法。我们在考虑三级 Lipkin 模型时提出基准计算,这是一个简单且最小的模型,具有两个阶段:球形和变形。结果表明,该方法提供了良好的基态能量和低位光谱。
更新日期:2021-09-22
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