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Derivative coupling model description of nuclear matter in the Dirac-Hartree-Fock approximation

Abstract : Properties of nuclear matter are calculated in the Dirac-Hartree-Fock approximation within the Zimanyi and Moszkowski model, which considers a derivative coupling in the scalar field. The present model improves the previous sigma-omega version,by the inclusion of the charged mesons pi and rho. The pi N interaction is a mixing of pseudoscalar and pseudovector couplings. The introduction of the pi degrees of freedom has a strong influence on the nucleon effective mass, while keeping the compression modulus in a range of values in agreement with experiments. Effects on the spin-orbit splitting are also discussed.
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http://hal.in2p3.fr/in2p3-00006004
Contributor : Suzanne Robert Connect in order to contact the contributor
Submitted on : Wednesday, September 6, 2000 - 4:27:50 PM
Last modification on : Sunday, June 26, 2022 - 11:42:46 AM

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  • HAL Id : in2p3-00006004, version 1

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P. Bernardos, R.J. Lombard, M. Lopez-Quelle, S. Marcos, R. Niembro. Derivative coupling model description of nuclear matter in the Dirac-Hartree-Fock approximation. Physical Review C, American Physical Society, 2000, 62, pp.024314-1-024314-9. ⟨in2p3-00006004⟩

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