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Coarse-grained short-range correlations
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DOI：10.1103/PhysRevC.95.054003.png)
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摘要
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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 S-1(0) 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.
Keyword:
NUCLEON-NUCLEON CORRELATIONS
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MODEL
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期刊
IF:
3.4
论文数:
2.9W
被引数:
5.7W
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