Bose-Einstein condensation of five $\alpha$ clusters in ${}^{20}$Ne and supersolidity

S. Ohkubo, J. Takahashi, Y. Yamanaka

We show that the five $\alpha$ cluster states recently observed in ${}^{20}$Ne, slightly above the five $\alpha$ threshold energy, are Bose-Einstein condensates of five $\alpha$ clusters. The state…