Electric Polarizability of the Nucleon in the Nambu--Jona-Lasinio Model
E. Nikolov, W. Broniowski, K. Goeke
Abstract
The electric polarizability of the nucleon is calculated in the soliton approach to the Nambu--Jona-Lasinio model. We analyze the leading-Nc contributions, as well as the effects of rotational 1/Nc corrections and Δ-N mass splitting. Our model prediction is substantially reduced compared to other soliton calculations, and is closer to the experimental value.
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