Di-nucleon structures in homogeneous nuclear matter based on two- and three-nucleon interactions
Di-nucleon structures in homogeneous nuclear matter based on two- and three-nucleon interactions
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DOI：
10.1140/epja/i2016-16299-2
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发表时间：
2016-06
期刊：
影响因子：
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通讯作者：
H. Arellano;F. Isaule;A. Rios
中科院分区：
文献类型：
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作者：
H. Arellano;F. Isaule;A. Rios
我们用Brueckner-Hartree-Fock(BHF)方法研究了同位旋对称核物质(SNM)范围内的均匀核物质以及零温下的纯中子物质。这项研究是基于Argonne v18，Paris，Nijmegen I和II势给出的核间相互作用的真实表示，以及手性N3LO相互作用，包括直到N2LO的三核子力。特别注意了1S0和3SD1通道中双核子束缚态结构的存在，它的显式解释对于低密度下自洽解的稳定性至关重要。讨论了这些解和相关联的束缚态的特征。我们证实，在实际核子势的选择下，在费米动量为0.13−0.3fm−1的范围内，SNM中共存的BHF单粒子解是一个健壮的特征。
We investigate homogeneous nuclear matter within the Brueckner-Hartree-Fock (BHF) approach in the limits of isospin-symmetric nuclear matter (SNM) as well as pure neutron matter at zero temperature. The study is based on realistic representations of the internucleon interaction as given by Argonne v18, Paris, Nijmegen I and II potentials, in addition to chiral N3LO interactions, including three-nucleon forces up to N2LO. Particular attention is paid to the presence of di-nucleon bound states structures in 1S0 and 3SD1 channels, whose explicit account becomes crucial for the stability of self-consistent solutions at low densities. A characterization of these solutions and associated bound states is discussed. We confirm that coexisting BHF single-particle solutions in SNM, at Fermi momenta in the range 0.13− 0.3 fm− 1, is a robust feature under the choice of realistic internucleon potentials.