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arXiv 2009.01205nucl-th
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壳模型哈密顿量的温度平均场近似:程序HF-SHELL

Finite-temperature mean-field approximations for shell model Hamiltonians: the code HF-SHELL

W. Ryssens, Y. Alhassid

摘要:

本文给出了求解质子-中子形式下组态相互作用壳模型哈密顿量的自洽平均场方程的程序HF-SHELL。该程序可以计算Hartree-Fock(HF)、HF+Bardeen-Cooper-Schrieffer(HF+BCS)和Hartree-Fock-Bogoliubov(HFB)平均场近似下的基态和有限温度性质。变分后的粒子数投影被合并,以减少巨正则系综的正则系综,使代码特别适合于核态密度的计算。该代码不强加轴对称,并允许三轴四极形变。通过使用重球优化技术和实施不同的选项来约束四极杆自由度,自洽循环是特别鲁棒的。

英文摘要:

We present the code HF-SHELL for solving the self-consistent mean-field equations for configuration-interaction shell model Hamiltonians in the proton-neutron formalism. The code can calculate both ground-state and finite-temperature properties in the Hartree-Fock (HF), HF+Bardeen-Cooper-Schrieffer (HF+BCS), and the Hartree-Fock-Bogoliubov (HFB) mean-field approximations. Particle-number projection after variation is incorporated to reduce the grand-canonical ensemble to the canonical ensemble, making the code particularly suitable for the calculation of nuclear state densities. The code does not impose axial symmetry and allows for triaxial quadrupole deformations. The self-consistency cycle is particularly robust through the use of the heavy-ball optimization technique and the implementation of different options to constrain the quadrupole degrees of freedom.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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