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arXiv 1107.4956nucl-th
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短程核子-核子关联的普适性

Universality of short-range nucleon-nucleon correlations

H. Feldmeier, W. Horiuchi, T. Neff, Y. Suzuki

摘要:

利用Argonne V8'相互作用研究了轻核不同自旋-同位旋通道中核子对之间的短程关联。在1 fm以下的距离的一个普遍的行为被发现的氘核,3 H,3 He和地面和第一激发态在4 He。坐标空间中的这种行为反映在动量空间中高动量分量的普遍行为上。普适性表明,成对重整化是可能的,以获得一个普遍的有效的两体相互作用,不散射到高动量状态。精确的两体密度进行了比较,使用简单的试验波函数的酉相关算子方法。讨论了张量力引起的三体关联对两体密度的影响。

英文摘要:

Short-range correlations between nucleon pairs in different spin-isospin channels are investigated for light nuclei using the Argonne V8' interaction. At distances below 1 fm a universal behavior is found for the deuteron, 3H, 3He and for ground and first excited states in 4He. This behavior in coordinate space is reflected by a universal behavior for the high-momentum components in momentum space. The universality indicates that a pairwise renormalization is possible in order to obtain a universal effective two-body interaction that does not scatter to high momentum states. The exact two-body densities are compared with those obtained using the unitary correlation operator method with simple trial wave functions. The effect of three-body correlations due to the tensor force on the two-body densities is discussed.

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