2018/09/30 by Yoritaka Iwata, Paul Stevenson · 1 citation
Physics and Astronomy · #Charge (physics) #Energy (signal processing) #Nonlinear system #Nuclear physics research studies #Nucleus #Point (geometry) #Pulsars and Gravitational Waves Research #Quantum Mechanics and Non-Hermitian Physics #Soliton #Symmetry (geometry) #astro-ph.HE #nlin.PS #nucl-ex #nucl-th
paper · pdf · doi:10.1088/1367-2630/ab0e58
published as New J. Phys. 21 (2019) 043010 · Submitted
openalex created_date 2018/10/05 · arxiv created 2019/01/31 · openalex publication_date 2019/03/08 · arxiv updated 2019/04/10 · openalex updated_date 2026/08/05
Propagation of non-topological soliton in many-nucleus systems is studied based on time-dependent density functional calculations with focusing on mass and energy dependence. The dispersive property and the nonlinearity of the system, which are inherently included in the nuclear density functional, are essential factors to form a non-topological soliton. On the other hand the soliton propagation is prevented by the charge equilibration dynamics, and the competition possibly appears. In this article, based on the energy-dependence of the two competitive factors, the concept of conditional recovery of time-reversal symmetry is proposed in many nucleus systems. It clarifies a possibility of preserving nuclear medium inside natural or artificial nuclear reactors, under a suitable temperature. From an astrophysical point of view, the existence of the low-temperature solitonic core of compact stars is suggested.