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arXiv 0902.3933nucl-th
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酉相关算子方法(UCOM)框架下的配对:Hartree-Fock-Bogoliubov计算

Pairing in the Framework of the Unitary Correlation Operator Method (UCOM): Hartree-Fock-Bogoliubov Calculations

H. Hergert, R. Roth

摘要:

在这一系列文章的第一篇中,我们将酉相关算子方法(UCOM)导出的有效相互作用应用于开壳层核的描述,使用自洽的Hartree-Fock-Bogoliubov框架来解释配对相关。为了解开粒子-空穴和粒子-粒子通道,并评估$\VUCOM$的配对属性,我们考虑混合计算使用的唯象Gogny D1 S相互作用,以获得粒子-空穴平均场。在本文的主要部分,我们使用$\VUCOM$在粒子-空穴和粒子-粒子两个通道中计算了锡同位素链。我们研究了这两个渠道的相互作用,并讨论了现实的相互作用,以及经常使用的限制配对相互作用的${}^1S_0$分波的非中心和非本地条款的影响。质量中心运动的治疗及其对理论配对间隙的影响独立于所使用的相互作用进行评估。

英文摘要:

In this first in a series of articles, we apply effective interactions derived by the Unitary Correlation Operator Method (UCOM) to the description of open-shell nuclei, using a self-consistent Hartree-Fock-Bogoliubov framework to account for pairing correlations. To disentangle the particle-hole and particle-particle channels and assess the pairing properties of $\VUCOM$, we consider hybrid calculations using the phenomenological Gogny D1S interaction to derive the particle-hole mean field. In the main part of this article, we perform calculations of the tin isotopic chain using $\VUCOM$ in both the particle-hole and particle-particle channels. We study the interplay of both channels, and discuss the impact of non-central and non-local terms in realistic interactions as well as the frequently used restriction of pairing interactions to the ${}^1S_0$ partial wave. The treatment of the center-of-mass motion and its effect on theoretical pairing gaps is assessed independently of the used interactions.

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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