Abstract
In supernova cores, nuclear “pasta” phases such as a triangular lattice of rodlike nuclei and layered structure of slablike nuclei are considered to exist. However, it is still unclear whether or not they are actually formed in collapsing supernova cores. Using ab initio simulations called quantum molecular dynamics, here we solve this problem by demonstrating that a lattice of rodlike nuclei is formed from a bcc lattice by compression. We also find that, in the transition process, the system undergoes a zigzag configuration of elongated nuclei, which are formed by a fusion of two original spherical nuclei.
- Received 3 April 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.121101
©2009 American Physical Society
Synopsis
Simulating nuclear pasta
Published 14 September 2009
Simulations support the prediction that when nuclei are squeezed to high densities in the core of a supernova, they merge into exotic shapes such as rods and slabs.
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