具有软化相互作用的均匀物质中的估计和功率计数
Estimates and power counting in uniform matter with softened interactions
摘要：
现代软化核子-核子相互作用非常适合微扰多体计算，但缺乏多体功率计数方案。在有限密度的图解贡献估计是这样一个计划的重要组成部分。在这里，我们展示了如何作出定量估计的粒子-粒子和空穴-空穴通道的均匀核物质的软相互作用。我们还使用估计来评估正常有序的三体作用力的作用，为一个纯粹的接触相互作用。
英文摘要：
Modern softened nucleon-nucleon interactions are well-suited for perturbative many-body calculations, but a many-body power counting scheme is lacking. Estimates of diagrammatic contributions at finite density are important ingredients in such a scheme. Here we show how to make quantitative estimates of the particle-particle and hole-hole channel in uniform nuclear matter for soft interactions. We also use estimates to assess the role of normal-ordered three-body forces for a pure contact interaction.
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