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arXiv 1607.00977quant-ph
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一维简谐相互作用箱中四粒子的对称性

On the symmetry of four particles in a one-dimensional box with harmonic interaction

Francisco M. Fernández

摘要:

我们证明了在一维盒子中的四粒子系统,具有两粒子谐振相互作用,可以用对称点群$O_h$来描述。群论被证明对讨论小盒子和大盒子机制都是有用的。我们应用微扰理论,得到了最低态的一阶修正。我们进行了一个简单的Rayleigh-Ritz变分计算与适应系统的对称性的基组。我们还获得了前三个最低的能级,更适合于较大的盒子尺寸的替代变分结果。

英文摘要:

We show that a system of four particles in a one-dimensional box with a two-particle harmonic interaction can by described by means of the symmetry point group $O_h$. Group theory proves useful for the discussion of both the small-box and large-box regimes. We apply perturbation theory and obtain the corrections of first order for the lowest states. We carry out a simple Rayleigh-Ritz variational calculation with basis sets adapted to the symmetries of the system. We also obtain alternative variational results for the first three lowest energy levels that are more suitable for larger box sizes.

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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