2002/05/31 by Gentaro Watanabe, Katsuhiko Sato, Kenji Yasuoka +1 · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #Quantum, superfluid, helium dynamics #astro-ph #cond-mat #nucl-th
paper · pdf · doi:10.1103/physrevc.66.012801
published as Phys.Rev. C66 (2002) 012801 · 6 pages, 4 figures, RevTex4; to be published in Phys. Rev. C Rapid Communication (accepted version)
arxiv created 2002/06/27 · openalex publication_date 2002/07/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The structure of cold dense matter at subnuclear densities is investigated by quantum molecular dynamics simulations. We succeeded in showing that the phases with slablike and rodlike nuclei, etc., can be formed dynamically from hot uniform nuclear matter without any assumptions on nuclear shape. We also observe intermediate phases, which have complicated nuclear shapes. Geometrical structures of matter are analyzed with Minkowski functionals, and it is found that intermediate phases can be characterized as those with negative Euler characteristic. Our result suggests the existence of these kinds of phases in addition to the simple ``pasta'' phases in neutron star crusts.