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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Many-body calculations with deuteron based single-particle bases and their associated natural orbits
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Many-body calculations with deuteron based single-particle bases and their associated natural orbits

机译:基于氘核的单粒子基础及其相关的天然轨道的许多身体计算

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摘要

We use the recently introduced single-particle states obtained from localized deuteron wave-functions as a basis for nuclear many-body calculations. We show that energies can be substantially lowered if the natural orbits (NOs) obtained from this basis are used. We use this modified basis for B-10, O-16 and Mg-24 employing the bare NNLOopt nucleon-nucleon interaction. The lowering of the energies increases with the mass. Although in principle NOs require a full scale preliminary many-body calculation, we found that an approximate preliminary many-body calculation, with a marginal increase in the computational cost, is sufficient. The use of natural orbits based on an harmonic oscillator basis leads to a much smaller lowering of the energies for a comparable computational cost.
机译:我们使用最近引入的单粒子态从局部化的氘代波函数获得,作为核数量计算的基础。 如果使用从此基础获得的天然轨道(NOS),我们表明可以基本上降低能量。 我们使用这种修饰的B-10,O-16和MG-24基础,采用裸NNLoopt核仁核核酸相互作用。 对能量的降低随质量增加而增加。 虽然原则上NOS需要全规模的初步初步的许多身体计算,但我们发现近似的初步多体计算,计算成本的边际增加就足够了。 基于谐振管基础的自然轨道的使用导致可比计算成本的能量降低得多。

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