Non-uniform structure of low-density nuclear matter by three-dimensional calculation without any assumption of the structures

Okamoto, Minoru; Maruyama, Toshiki  ; Yabana, Kazuhiro*; Tatsumi, Toshitaka*

We numerically explore the pasta structures and properties of low-density nuclear matter without any assumption on the geometry. We observe conventional pasta structures, while a mixture of the pasta structures appears as a metastable state at some transient densities and discuss these results. We have observed the fcc lattice structure of droplets instead of the bcc lattice, which is against the results of previous works. This difference comes from our fully consistent treatment of the lattice structure and the droplet.