## Abstract

Relativistic two-nucleon correlations are studied using a self-consistent summation of ladder diagrams in nuclear matter. Correlations have a small effect on the nucleon self-energy but may produce significant changes in the binding energy. Correlation corrections to the mean-field equation of state are small at high density.

Original language | English |
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Pages (from-to) | 287-293 |

Number of pages | 7 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 137 |

Issue number | 5-6 |

DOIs | |

State | Published - 5 Apr 1984 |

Externally published | Yes |

### Bibliographical note

Funding Information:The study of the two-nucleon problem in infinite nuclear matter has historically led to considerable insight into the nucleon-nucleon interaction. In a nonrelativistic approach, one begins with a two-body potential and solves the Bethe-Goldstone equation \[1 -3\] for the correlated two-nucleon wave function, incorporating both the Pauli exclusion principle and the average single-particle potential acting on nucleons in the medium. There is increasing evidence that the nucleon-nucleon interaction contains large Lorentz scalar and four-vector components. These components may be seen directly by writing the observed NN interaction in terms of Lorentz invariants \[4\],a nd they also arise naturally in one-boson-exchange-potential (OBEP) descriptions of NN scattering \[5,6\]M. oreover, Dirac-Hartree calculations of finite nuclei incorporating large scalar and vector potentials yield excellent agreement with the bulk properties of doubly magic nuclei \[7-9\]. Finally, recent calculations of cross sections and spin observables in medium-energy nucleon- Supported in part by NSF Grant PHY 81-07395 and US DOE contract DE-AC02-76ER03069. I Alfred P. Sloan Foundation Research Fellow.

### Funding

The study of the two-nucleon problem in infinite nuclear matter has historically led to considerable insight into the nucleon-nucleon interaction. In a nonrelativistic approach, one begins with a two-body potential and solves the Bethe-Goldstone equation \[1 -3\] for the correlated two-nucleon wave function, incorporating both the Pauli exclusion principle and the average single-particle potential acting on nucleons in the medium. There is increasing evidence that the nucleon-nucleon interaction contains large Lorentz scalar and four-vector components. These components may be seen directly by writing the observed NN interaction in terms of Lorentz invariants \[4\],a nd they also arise naturally in one-boson-exchange-potential (OBEP) descriptions of NN scattering \[5,6\]M. oreover, Dirac-Hartree calculations of finite nuclei incorporating large scalar and vector potentials yield excellent agreement with the bulk properties of doubly magic nuclei \[7-9\]. Finally, recent calculations of cross sections and spin observables in medium-energy nucleon- Supported in part by NSF Grant PHY 81-07395 and US DOE contract DE-AC02-76ER03069. I Alfred P. Sloan Foundation Research Fellow.

Funders | Funder number |
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National Science Foundation | PHY 81-07395 |

U.S. Department of Energy | DE-AC02-76ER03069 |