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arXiv 1709.04028nucl-thphysics.comp-ph
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angular momentum的线性代数投影

Projection of angular momentum via linear algebra

Calvin W. Johnson, Kevin D. O'Mara

摘要:

从一个初始态投影具有良好角动量的多体状态通常是通过三维积分来完成的。我们展示了如何投影,而不是通过求解一个简单的线性方程组。我们演示了该方法,并给出了$pf$壳层中$^{48}$ Cr和$^{60}$ Fe的应用实例。这种新的投影方案与标准的数值求积方法相比具有很强的竞争力,它也适用于其他的量子数,如同位旋和粒子数。

英文摘要:

Projection of many-body states with good angular momentum from an initial state is usually accomplished by a three-dimensional integral. We show how projection can instead be done by solving a straightforward system of linear equations. We demonstrate the method and give sample applications to $^{48}$Cr and $^{60}$Fe in the $pf$ shell. This new projection scheme, which is competitive against the standard numerical quadrature, should also be applicable to other quantum numbers such as isospin and particle number.

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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