Clustering effects of nucleonic matter in low-density region

We consider clusterized nucleonic matter with crystal structure which is described by Bloch function. By using Bloch function, we can describe two extreme states, isolated clusterized matter and uniform matter, in low and high density, respectively, and also intermediate states continuously. We treat not only α-cluster matter but also ¹⁰He-and ¹⁶O-cluster matter by introducing p-wave Bloch function orthogonal to s-wave Bloch function. P-shell cluster-like density fluctuation arises below a certain critical density as well as s-shell cluster-like one.