Nuclear Potential with Two Pion Exchange

2012/09/14 by Takehisa Fujita, Fujita, Takehisa, Naohiro Kanda +3
Physics and Astronomy · #FOS: Physical sciences #Nuclear Physics and Applications #Nuclear Theory (nucl-th) #Nuclear physics research studies #Radioactive Decay and Measurement Techniques

paper · pdf · doi:10.48550/arxiv.1209.3067

openalex publication_date 2012/09/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We carefully calculate the nucleon-nucleon interaction due to two pion exchange processes by properly evaluating the corresponding Feynman diagrams. In the estimation, we have made no approximation, and instead, we carry out the numerical integrations of three Feynman parameters. It is found that the two pion exchange potential gives rise to the attractive force which corresponds to the effective scalar meson with its mass of m_s≃ 4.7 m_π and its strength of g_s²\over 4π≃ 1.45 . There is a strong isospin dependence of (\bmτ₁⋅ \bmτ₂)² which cannot be simulated by the one boson exchange model calculations.

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