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arXiv 1209.2270nucl-thastro-ph.HE
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核物质的相关性

Correlations in Nuclear Matter

M. Baldo, H. R. Moshfegh

摘要:

我们用对关联函数分析了核物质的关联性质。为了这个目的,我们系统地比较结果的变分方法在最低阶约束变分(LOCV)近似和Bruekner-Hartree-Fock(BHF)计划。建立了LOCV的Jastrow相关因子和压边力的缺陷函数(DF)之间的正式联系,并证明了在何种条件和近似下这两种方法是等价的。数值比较表明,两个关联函数相当接近,这特别表明DF近似是局域的和动量无关的。比较了两种方法中核物质的物态方程。结果表明,引入三体力后,两种状态方程相当接近,而有无三体力时,两种状态方程的关联函数基本一致。

英文摘要:

We analyze the nuclear matter correlation properties in terms of the pair correlation function. To this aim we systematically compare the results for the variational method in the Lowest Order Constrained Variational (LOCV) approximation and for the Bruekner-Hartree-Fock (BHF) scheme. A formal link between the Jastrow correlation factor of LOCV and the Defect Function (DF) of BHF is established and it is shown under which conditions and approximations the two approaches are equivalent. From the numerical comparison it turns out that the two correlation functions are quite close, which indicates in particular that the DF is approximately local and momentum independent. The Equations of State (EOS) of Nuclear Matter in the two approaches are also compared. It is found that once the three-body forces (TBF) are introduced the two EOS are fairly close, while the agreement between the correlation functions holds with or without TBF.

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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