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arXiv · 0904.0512

Formation of Nuclear "Pasta" in Supernovae

Gentaro Watanabe·Hidetaka Sonoda·Toshiki Maruyama·Katsuhiko Sato·Kenji Yasuoka·Toshikazu Ebisuzaki
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Abstract

In supernova cores, nuclear "pasta" phases such as triangular lattice of rod-like nuclei and layered structure of slab-like nuclei are considered to exist. However, it is still unclear whether or not they are actually formed in collapsing supernova cores. Using {\it ab-initio} numerical simulations called the Quantum Molecular Dynamics (QMD), we here solve this problem by demonstrating that a lattice of rod-like nuclei is formed from a bcc lattice by compression. We also find that, in the transition process, the system undergoes zigzag configuration of elongated nuclei, which are formed by a fusion of two original spherical nuclei.

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Gentaro Watanabe, Hidetaka Sonoda, Toshiki Maruyama, Katsuhiko Sato, Kenji Yasuoka, Toshikazu Ebisuzaki. 2009-08-27. Formation of Nuclear "Pasta" in Supernovae. https://doi.org/10.1103/physrevlett.103.121101

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