Simulation of Transitions between "Pasta" Phases in Dense Matter
Gentaro Watanabe, Toshiki Maruyama, Katsuhiko Sato, Kenji Yasuoka, Toshikazu Ebisuzaki
Abstract
Calculations of equilibrium properties of dense matter predict that at subnuclear densities nuclei can be rodlike or slablike. To investigate whether transitions between phases with non-spherical nuclei can occur during the collapse of a star, we perform quantum molecular dynamic simulations of the compression of dense matter. We have succeeded in simulating the transitions between rodlike and slablike nuclei and between slablike nuclei and cylindrical bubbles. Our results strongly suggest that non-spherical nuclei can be formed in the inner cores of collapsing stars.
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