Nuclear relativistic Hartree-Fock approximation with weakened pion tensor force

Journal Article · Wed May 15 04:00:00 EDT 2013 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778813050074· OSTI ID:22126541

Lopez-Quelle, M. ^[1]; Niembro, R. ^[2]; Savushkin, L. N. ^[1]

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1. St. Petersburg University for Telecommunications (Russian Federation)
2. Universidad de Cantabria (Spain)

Properties linked to the single-particle energies, as nuclear spectra, spin-orbit splittings and shell gaps are investigated in the framework of the relativistic Hartree-Fock approximation with pseudovector coupling for the {pi}N vertex. The role of an effective mass of pions moving in the nuclear medium and its relationship with the strength of pion tensor force is discussed. A simple method to reduce the contribution of this tensor force that considerably improves the single-particle spectrum of nuclei is proposed.

• OSTI ID: 22126541
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 5 Vol. 76; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
EFFECTIVE MASS
HARTREE-FOCK METHOD
L-S COUPLING
PIONS
PSEUDOVECTOR COUPLING
RELATIVISTIC RANGE
SPECTRA
TENSOR FORCES