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arXiv · 2208.10870

Optimization of the number of intrinsic states included in the discrete Generator Coordinate Method

Jaime Martínez-Larraz·Tomás R. Rodríguez
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Abstract

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.

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Jaime Martínez-Larraz, Tomás R. Rodríguez. 2022-08-23. Optimization of the number of intrinsic states included in the discrete Generator Coordinate Method. https://doi.org/10.1103/physrevc.106.054301

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