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      Ab initio many-body calculations of the 4He photo-absorption cross section

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          Abstract

          A major goal of nuclear theory is to make quantitative calculations of low-energy nuclear observables starting from microscopic internucleon forces. Computationally, this is complicated by the large model spaces needed to reach convergence in many-body approaches, such as the no-core shell model (NCSM). In recent years, the similarity renormalization group (SRG) has provided a powerful and versatile means to soften interactions for ab initio structure calculations, thus leading to convergence within smaller model spaces. Here we compute the 4He total photo absorption cross section and study, for the first time, the consistency of the SRG approach in a continuum observable.

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          Author and article information

          Journal
          2013-04-19
          Article
          1304.5491
          6e112598-fcf1-43f7-bf49-7bc358132c28

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          Custom metadata
          LLNL-JRNL-629273-DRAFT
          nucl-th

          Nuclear physics
          Nuclear physics

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