Complex coupled-cluster approach to an ab-initio description of open quantum systems
Complex coupled-cluster approach to an ab-initio description of open quantum systems
复制标题
开放量子系统从头开始描述的复杂耦合簇方法
DOI：
10.1016/j.physletb.2007.07.072
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发表时间：
2006
影响因子：
4.4
通讯作者：
T. Papenbrock
中科院分区：
文献类型：
--
作者：
G. Hagen;D. Dean;M. Hjorth;T. Papenbrock
我们发展了从头算耦合团簇理论来描述沿着中子滴线的共振态和弱束缚态。我们在耦合团簇理论的单双近似下计算了氦原子链3 - 10 He的基态。我们采用了一个球形Gamow-Hartree-Fock基，它是由低动量N3 LO核子-核子相互作用产生的。这个基础上对待绑定，共振，和连续状态在平等的基础上，因此是最佳的描述性质的滴水线核连续功能发挥了至关重要的作用。在这种形式主义，我们提出了一个从头计算的能量和衰变宽度的不稳定核从现实的相互作用。
We develop ab-initio coupled-cluster theory to describe resonant and weakly bound states along the neutron drip line. We compute the ground states of the helium chain3–10He within coupled-cluster theory in singles and doubles (CCSD) approximation. We employ a spherical Gamow–Hartree–Fock basis generated from the low-momentum N3LO nucleon–nucleon interaction. This basis treats bound, resonant, and continuum states on an equal footing, and is therefore optimal for the description of properties of drip line nuclei where continuum features play an essential role. Within this formalism, we present an ab-initio calculation of energies and decay widths of unstable nuclei starting from realistic interactions.