Coarse-grained short-range correlations

I. Ruiz Simo, R. Navarro Pérez, J. E. Amaro, and E. Ruiz Arriola
Phys. Rev. C 95, 054003 – Published 24 May 2017

Abstract

We develop a scheme to take into account the effects of short-range nucleon-nucleon correlations in the nucleon-pair wave function by solving the Bethe-Goldstone equation for a coarse-grained delta shell potential in S-wave configuration. The S-wave delta shell potential has been adjusted to reproduce the 1S0 phase shifts of the AV18 potential for this partial wave up to 2 GeV in the laboratory kinetic energy. We show that a coarse-grained potential can describe the high momentum tail of the back-to-back correlated pairs and the G matrix in momentum space. We discuss the easiness and robustness of the calculation in coordinate space and the future improvements and utilities of this model. This work suggests the possibility of using perturbation theory for describing the short-range correlations and, related to this, to substitute the G matrix by an appropriate coarse-grained potential.

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  • Received 19 December 2016
  • Revised 23 February 2017

DOI:https://doi.org/10.1103/PhysRevC.95.054003

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

I. Ruiz Simo1, R. Navarro Pérez2, J. E. Amaro1, and E. Ruiz Arriola1

  • 1Departamento de Física Atómica, Molecular y Nuclear, and Instituto de Física Teórica y Computacional Carlos I, Universidad de Granada, Granada 18071, Spain
  • 2Nuclear and Chemical Science Division, Lawrence Livermore National Laboratory, Livermore, California 94551, USA

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Issue

Vol. 95, Iss. 5 — May 2017

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