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arXiv 0806.1520nucl-th
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三维Yakubovsky方案中4 N束缚态的实在形式

A Realistic Formalism for 4N Bound State in a Three-Dimensional Yakubovsky Scheme

S. Bayegan, M. R. Hadizadeh, W. Gloeckle

摘要:

本文提出了一种基于动量矢量的四核子束缚态自旋-同位旋相关的三维形式。本文将含有两核子和三核子相互作用的四核子雅库博夫斯基方程表述为矢量雅可比动量的函数。我们的形式主义,根据自旋-同位旋状态的数量,一个考虑,导致只有一个严格有限数量的耦合三维积分方程求解。与分波表象相比,由于考虑了连续的角变量而不是离散的角动量量子数,跃迁和置换算符的计算以及坐标变换的计算都不那么复杂。相对于分波,本形式主义与较少的方程数导致较高的维数的积分方程。我们得出结论,三维形式主义对于考虑三个核子的力是不那么麻烦的。

英文摘要:

A spin-isospin dependent Three-Dimensional formalism based on the momentum vectors for the four-nucleon bound state is presented. The four-nucleon Yakubovsky equations with two- and three-nucleon interactions are formulated as a function of the vector Jacobi momenta. Our formalism, according to the number of spin-isospin states that one takes into account, leads to only a strictly finite number of the coupled three-dimensional integral equations to be solved. The evaluation of the transition and permutation operators as well as the coordinate transformations due to considering the continuous angle variables instead of the discrete angular momentum quantum numbers are less complicated in comparison with partial wave representation. With respect to partial wave the present formalism with the smaller number of equations leads to higher dimensionality of the integral equations. We have concluded that Three-Dimensional formalism is less cumbersome for considering the three-nucleon forces.

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