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Short-range correlation physics at low renormalization group resolution
Physical Review C ( IF 3.2 ) Pub Date : 2021-09-13 , DOI: 10.1103/physrevc.104.034311
A. J. Tropiano , S. K. Bogner , R. J. Furnstahl

Recent experiments have succeeded in isolating processes for which short-range correlation (SRC) physics is dominant and well accounted for by SRC phenomenology. But an alternative and compelling picture emerges from renormalization group (RG) evolution to low RG resolution. At high RG resolution, SRCs are identified as components in the nuclear wave function with relative pair momenta greater than the Fermi momentum. Scale separation results in wave-function factorization that can be exploited with phenomenologies such as the generalized contact formalism or the low-order correlation operator approximation. Evolution to lower resolution shifts SRC physics from nuclear structure to the reaction operators without changing the measured observables. We show how the features of SRC phenomenology manifested at high RG resolution are cleanly identified at low RG resolution using simple two-body operators and local-density approximations with uncorrelated wave functions, all of which can be systematically generalized. We verify that the experimental consequences to date follow directly at low resolution from well-established properties of nucleon-nucleon interactions such as the tensor force. Thus the RG reconciles the contrasting pictures of the same experiment and shows how to get correct results using wave functions without SRC components. Our demonstration has implications for the analysis of knockout reactions for which SRC physics is not cleanly isolated.

中文翻译:

低重整化群分辨率下的短程相关物理

最近的实验成功地隔离了短程相关 (SRC) 物理学占主导地位并由 SRC 现象学很好地解释的过程。但是从重整化组 (RG) 演化到低 RG 分辨率,出现了另一种引人注目的图片。在高 RG 分辨率下,SRC 被识别为核波函数中的分量,其相对对动量大于费米动量。尺度分离导致波函数分解,可用于现象学,例如广义接触形式主义或低阶相关算子近似。向更低分辨率的演变将 SRC 物理从核结构转移到反应算子,而不会改变测量的可观测值。我们展示了如何使用简单的二体算子和具有不相关波函数的局部密度近似,在低 RG 分辨率下清晰地识别在高 RG 分辨率下表现出的 SRC 现象学特征,所有这些都可以系统地推广。我们验证了迄今为止的实验结果直接以低分辨率从核子 - 核子相互作用的公认特性(例如张量力)中得出。因此,RG 协调了同一实验的对比图片,并展示了如何使用没有 SRC 分量的波函数获得正确的结果。我们的演示对 SRC 物理未完全隔离的敲除反应的分析具有影响。所有这些都可以系统地概括。我们验证了迄今为止的实验结果直接以低分辨率从核子 - 核子相互作用的公认特性(例如张量力)中得出。因此,RG 协调了同一实验的对比图片,并展示了如何使用没有 SRC 分量的波函数获得正确的结果。我们的演示对 SRC 物理未完全隔离的敲除反应的分析具有影响。所有这些都可以系统地概括。我们验证了迄今为止的实验结果直接以低分辨率从核子 - 核子相互作用的公认特性(例如张量力)中得出。因此,RG 协调了同一实验的对比图片,并展示了如何使用没有 SRC 分量的波函数获得正确的结果。我们的演示对 SRC 物理未完全隔离的敲除反应的分析具有影响。
更新日期:2021-09-13
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