论文标题
优化离散发电机坐标方法中包含的内在状态数量
Optimization of the number of intrinsic states included in the discrete Generator Coordinate Method
论文作者
论文摘要
我们提出了一种机制，可以有效预选用于定义离散生成器坐标方法（GCM）中多体波函数的内在多体状态的数量。此过程基于正常状态的自然基础的适当定义，不需要评估非二元组汉密尔顿内核来进行选择，并有助于减少数值不稳定性。该方法的性能在基础状态下进行详细分析，并用Gogny能量密度函数计算的某些选定核的激发态$ 0^{+} $。
We present a mechanism to efficiently pre-select the number of intrinsic many-body states that are used to define the many-body wave functions within the discrete Generator Coordinate Method (GCM). This procedure, based on the proper definition of a natural basis of orthonormal states, does not require the evaluation of the non-diagonal Hamiltonian kernels to do the selection and helps to reduce the numerical instabilities. The performance of the method is analyzed in detail in the ground state and $0^{+}$ excited states of some selected nuclei computed with the Gogny energy density functional.
