The Landau-Migdal Parameters, g'NN and g'NΔand Pion Condensations
T. Suzuki, H. Sakai, T. Tatsumi
Abstract
The Landau-Migdal parameters for nucleon-nucleon (g'NN) and nucleon-Δ(g'NΔ) couplings are estimated from recent experimental data on the giant Gamow-Teller state of 90Nb. The observed quenching of the GT strength by 10% provides 0.16<g'NΔ<0.23 for g'ΔΔ<1.0, while the excitation energy g'NN 0.59. The critical density of pion condensations is much lower than those previously discussed with the universality ansatz.
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