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Nuclear matter spectral function in the Bethe-Brueckner-Goldstone approach

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Abstract.

The microscopic many-body theory of the Nuclear Equation of State is discussed in the framework of the Bethe-Brueckner-Goldstone method. The expansion is extended up to the three hole-line diagrams contribution. Within the same scheme, the hole spectral function is calculated in nuclear matter to assess the relevance of nucleon-nucleon short-range correlations. The calculation is carried out by using several nucleon-nucleon realistic interactions. Results are compared with other approaches based on variational methods and transport theory. Discrepancies appear in the high-energy region, which is sensitive to short-range correlations, and are due to the different many-body treatment more than to the specific NN interaction used. Both nuclear matter Equation of State and spectral function appear to be dominated by two-body correlations.

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Authors and Affiliations

  1. Dipartimento di Fisica dell' Università di Catania, INFN, via S. Sofia 64, 95123, Catania, Italy

    M. Baldo & L. Lo Monaco

Authors
  1. M. Baldo
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  2. L. Lo Monaco
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Correspondence to M. Baldo.

Additional information

Received: 1 November 2002, Published online: 15 July 2003

PACS:

21.65.+f Nuclear matter - 21.10.Pc Single-particle levels and strength functions

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Baldo, M., Lo Monaco, L. Nuclear matter spectral function in the Bethe-Brueckner-Goldstone approach. Eur. Phys. J. A 17, 457–461 (2003). https://doi.org/10.1140/epja/i2002-10192-7

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  • DOI: https://doi.org/10.1140/epja/i2002-10192-7

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