Simulation of Transitions between "Pasta" Phases in Dense Matter

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.

4 pages, 4 figures, final version published in Phys. Rev. Lett., high-res figures can be seen at http://www.nordita.dk/~gentaro/research/figs

References in corpus (8)

• Neutrino-pasta scattering: the opacity of nonuniform neutron-rich matter
• Structure of cold nuclear matter at subnuclear densities by Quantum Molecular Dynamics
• Quantum Molecular Dynamics Approach to the Nuclear Matter Below the Saturation Density
• Microscopic Study of Slablike and Rodlike Nuclei: Quantum Molecular Dynamics Approach
• Phases of hot nuclear matter at subnuclear densities
• Electron screening in the liquid-gas mixed phases of nuclear matter
• Effects of Neutrino Trapping on Thermodynamic Properties of Nuclear ``Pasta''
• Formation of Nuclear "Pasta" in Cold Neutron Star Matter

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