The possible occurrence of abnormal nuclear states associated with neutral pion condensation has been studied in ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ and ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ within a Jastrow-type variational approach using an effective interaction to simulate Δ mixing into the nucleon states. The role played by short range correlations and Δ excitations in producing ${\pi }^0$ condensation is discussed.

• Received 28 January 1986

DOI:https://doi.org/10.1103/PhysRevC.34.1134