Wigner尖点的配对理论
Pairing Theory of the Wigner Cusp
摘要：
结论：（1）在Nilsson-Strutinskij计算中通常采用的BCS配对校正中加入RPA校正的计算很好地解释了N=Z附近质量模式随A的变化。(2)RPA修正对于再现双偶质量和维格纳尖点的形状是无关紧要的。(3)然而，重要的是，宏观（液滴）对称能与T（T+1）成比例。(4)这种形式的宏观对称能在微观上，根据RPA，被理解为来自核超流性。(5)Wigner尖点形状的变化主要受壳效应的影响。(6)RPA校正显著地降低了双奇核中的T=0结合，从而降低了所需的对耦合常数。
英文摘要：
Conclusions: (1) Calculations with an RPA correction added to the BCS pairing correction conventionally employed in Nilsson-Strutinskij calculations account well for the variation with A of the pattern of masses near N=Z. (2) The RPA correction is insignificant for reproducing the doubly even masses and hence for the shape of the Wigner cusp. (3) It is important, however, that the macroscopic (liquid drop) symmetry energy be proportional to T(T+1). (4) This form of the macroscopic symmetry energy is understood microscopically, in terms of the RPA, to result from the nuclear superfluidity. (5) The variation of the shape of the Wigner cusp is dominated by shell effects. (6) The RPA correction significally reduces the T=0 binding in doubly odd nuclei, thus reducing the required pair coupling constant.
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