多核系统时间反演对称性的条件恢复
Conditional recovery of time-reversal symmetry in many nucleus systems
摘要：
利用含时密度泛函方法研究了非拓扑孤子在多核系统中的传输，着重讨论了孤子的质量和能量依赖性。核密度泛函固有的色散特性和非线性特性是形成非拓扑孤子的重要因素。另一方面，电荷平衡动力学阻止了孤子的传播，可能出现竞争。本文基于两个竞争因子的能量依赖性，提出了在许多核系统中时间反演对称性的条件恢复的概念。它阐明了在适当温度下将核介质保存在天然或人工核反应堆内的可能性。从天体物理学的观点，提出了致密星低温孤子核的存在。
英文摘要：
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.
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