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Toward a systematic strategy for defining power counting in the construction of the energy density functional

机译:朝着在能量密度函数建设中定义功率计数的系统策略

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摘要

We propose a new scheme for constructing an effective-field-theory-based interaction to be used in the energy-density-functional (EDF) theory with specific assumptions for defining a power counting. This procedure is developed through the evaluation of the equation of state (EOS) of symmetric and pure neutron matter going beyond the mean-field scheme and using a functional defined up to next-to-leading order (NLO), which we call the NLO EDF. A Skyrme-like interaction is constructed based on the condition of renormalizibility and on power counting on k_F/△_(hi), where k_F is the Fermi momentum and △_(hi) is the breakdown scale of our expansion. To absorb the divergences present in beyond mean-field diagrams, counter interactions are introduced for the NLO EDF and determined through renormalization conditions. In particular, three scenarios are explored and all of them lead to satisfactory results. These counter interactions contain also parameters that do not contribute to the EOS of matter and may eventually be determined through future adjustments to properties of some selected finite nuclei. Our work serves as a simple starting point for constructing a well-defined power counting within the EDF framework.
机译:我们提出了一种新的方案,用于构建基于有效的基于场理论的相互作用,以便在能量密度 - 功能(EDF)理论中用于定义功率计数的具体假设。该程序是通过评估对称和纯中子物质的状态(EOS)的评估而开发的,超出平均场方案,并使用函数定义为下一阶(NLO),我们称之为NLO EDF。基于k_f /△_(hi)的重新形态的条件和k_f /△(hi)的电力计数的斯基尔梅形相互作用,其中k_f是fermi势头和△_(hi)是我们扩展的崩溃比例。为了吸收超出平均场图中存在的分歧,引入对NLO EDF的反互作,并通过重整化条件确定。特别是,探索了三种情景,所有这些方案都会导致令人满意的结果。这些计数器交互也包含对事物EO而没有贡献的参数,并且最终可以通过将来调整到一些选定的有限核的性质来确定。我们的工作是在EDF框架内构建一个明确的功率计数的简单起点。

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  • 来源
    《Physical Review C》 |2017年第2017期|034318.1-034318.12|共12页
  • 作者单位

    Institut de Physique Nucleaire CNRS/IN2P3 Universite Paris-Sud Universite Paris-Saclay F-91406 Orsay France;

    Institut de Physique Nucleaire CNRS/IN2P3 Universite Paris-Sud Universite Paris-Saclay F-91406 Orsay France;

    Institut de Physique Nucleaire CNRS/IN2P3 Universite Paris-Sud Universite Paris-Saclay F-91406 Orsay France;

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