The High precision, charge dependent Bonn nucleon-nucleon potential (CD-Bonn)

By Ruprecht Machleidt. 2000

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We present a charge-dependent one-boson-exchange nucleon-nucleon $(\mathrm{NN})$ potential that fits the world proton-proton data below 350 MeV available in the year 2000 with a ${\ensuremath{\chi}}^{2}$ per datum of 1.01 for 2932 data and the corresponding neutron-proton data with ${\ensuremath{\chi}}^{2}/\mathrm{datum}$ $=1.02$ for 3058 data. This reproduction of the $\mathrm{NN}$ data is more accurate than by any phase-shift analysis and any other $\mathrm{NN}$ potential. This is achieved by the introduction of two effective $\ensuremath{\sigma}$ mesons the parameters of which are partial-wave dependent. The charge dependence of the present potential (which we call ``CD-Bonn'') is based upon the predictions by the Bonn full model for charge symmetry and charge-independence breaking in all partial waves with $Jl~4.$ The potential is represented in terms of the covariant Feynman amplitudes for one-boson exchange which are nonlocal. Therefore, the off-shell behavior of the CD-Bonn potential differs in a characteristic way from commonly used local potentials and leads to larger binding energies in nuclear few- and many-body systems, where underbinding is a persistent problem.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/55bb1d9b083689042ec77c2389eb5b1c7c3dfbbc

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Citations in the corpus

Superfluidity in nuclear systems and neutron stars (2018, result): “Figure 21 shows the pairing gaps of protons obtained with the phase-shift equivalent Argonne (Baldo et al., 1992b; Baldo and Schulze, 2007) and Bonn potentials (Elgarøy et al., 1996a).”
Pairing in Nuclear Systems: From Neutron Stars to Finite Nuclei (2002, methodology): “…a description of the interaction in terms of various meson exchanges is presently the most quantitative representation, see for example (Machleidt, 1989, 2001; Machleidt et al., 1996; Stoks et al., 1994; Wiringa et al., 1995), in the energy regime of nuclear structure 1 The concept of…”
Electric Dipole Moments of Nucleons, Nuclei, and Atoms: The Standard Model and Beyond (2013, background): “ small, the size of vectormeson contributions is comparable to the NDA expectations, with some suppression coming from the numerical smallness of the P-, T-even rho-nucleon vector coupling g ˆNN ’3:2 [92, 93] compared to the analogous pion-nucleon coupling 2m Ng A=F ˇ ’13:5. (In contrast the same ra”