scholarly journals Alternative approach to σ-meson exchange in the nucleon-nucleon interaction

2007 ◽  
Vol 76 (1) ◽  
Author(s):  
Lingzhi Chen ◽  
Hourong Pang ◽  
Hongxia Huang ◽  
Jialun Ping ◽  
Fan Wang
Keyword(s):  
Nucleon Nucleon ◽  
Meson Exchange ◽  
Nucleon Interaction ◽  
Alternative Approach ◽  
Nucleon Nucleon Interaction

Meson exchange model for the nucleon-nucleon interaction

1975 ◽  
Vol 249 (3) ◽  
pp. 397-444 ◽  
Author(s):  
A.D. Jackson ◽  
D.O. Riska ◽  
B. Verwest
Keyword(s):  
Nucleon Nucleon ◽  
Exchange Model ◽  
Meson Exchange ◽  
Nucleon Interaction ◽  
Nucleon Nucleon Interaction

Quark degrees of freedom and nuclear matter saturation

2019 ◽  
Vol 34 (39) ◽  
pp. 1950322
Author(s):  
Marcello Baldo ◽  
Zahra Asadi Aghbolaghi ◽  
Isaac Vidaña ◽  
Mohsen Bigdeli
Keyword(s):  
Nuclear Matter ◽  
Degrees Of Freedom ◽  
Nucleon Nucleon ◽  
Meson Exchange ◽  
Nucleon Interaction ◽  
S Wave ◽  
Nucleon Potential ◽  
Quark Interaction ◽  
Exchange Processes ◽  
Nucleon Nucleon Interaction

It has been found in previous works [M. Baldo and K. Fukukawa, Phys. Rev. Lett. 113, 241501 (2014); K. Fukukawa, M. Baldo, G. F. Burgio, L. Lo Monaco and H.-J. Schulze, Phys. Rev. 92, 065802 (2015)] that the nucleon–nucleon potential of [Y. Fujiwara, M. Kohno, C. Nakamoto and Y. Suzuki Phys. Rev. C 64, 054001 (2001); Y. Fujiwara et al., Phys. Rev. C 65, 014002 (2001)] gives an accurate saturation point in symmetric nuclear matter once the three hole-line contributions are included in the Brueckner–Bethe–Goldstone expansion without the addition of three-body forces in the nuclear Hamiltonian. The potential is based on a quark model of nucleons and on the quark–quark interaction together with quark exchange processes. These features introduce an intrinsic nonlocality of the nucleon–nucleon interaction. In order to clarify the role of the quark degrees of freedom and of the nonlocality in the saturation, we perform a comparative study of this potential and the traditional meson exchange models, exemplified in the CD-Bonn potential. We find that at the Brueckner–Hartree–Fock approximation, which corresponds to the two hole-line level of approximation, the dominant modification of the nucleon–nucleon interaction with respect to CD-Bonn is incorporated in the s-wave channels, where the quark degrees of freedom should be more relevant, in particular for the short range quark exchange processes. However, when the three hole-line contribution is included, we find that the higher partial waves play a relevant role, mainly in the term that describes the effect of the medium on the off-shell propagation of the nucleon.

Nucleon-nucleon interaction from meson exchange and nucleonic structure

1994 ◽  
Vol 49 (5) ◽  
pp. 2370-2378 ◽  
Author(s):  
D. Plümper ◽  
J. Flender ◽  
M. F. Gari
Keyword(s):  
Nucleon Nucleon ◽  
Meson Exchange ◽  
Nucleon Interaction ◽  
Nucleon Nucleon Interaction
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