论文标题
Bose-Einstein凝结暗物质模型具有三粒子相互作用和两相结构
Bose-Einstein condensate dark matter model with three-particle interaction and two-phase structure
论文作者
论文摘要
我们探讨了将排斥性三粒子相互作用包括在Bose-Einstein冷凝物暗物质模型或模糊暗物质模型中的后果。这种基于正确修改的GROSS-PITAEVSKII方程的模型旨在描述在高度致密区域中暗物质颗粒的分布，这些区域对应于星系核心和/或碰撞星系的重叠。具体而言，我们根据冷凝水的宏观波函数处理$ ϕ^6 $模型，在这种宏观波函数中，相互作用的局部性由假定的大相关长度保证。在计算主要热力学特征之后，我们发现了有力的证据表明，存在两个不同的暗物质阶段，在其核心内，由位于模型中压力作用的两个不同特殊值之间的不稳定性区域隔开。讨论了存在两个阶段和相关一阶相变的一些含义。
We explore the consequences of including the repulsive three-particle interaction in the model of Bose-Einstein condensate dark matter model or fuzzy dark matter. Such a model based on properly modified Gross-Pitaevskii equation is intended to describe the distribution of dark matter particles in the highly dense regions, which correspond to the galaxy core and/or to the overlap of colliding galaxies. Specifically, we deal with the $ϕ^6$-model in terms of the macroscopic wave function of the condensate, where a locality of interaction is guaranteed by a large correlation length assumed to hold. After calculation of main thermodynamical characteristics, we find strong evidence of the existence of two distinct phases of dark matter, within its core, separated by the instability region lying between two differing special values of the pressure acting in the model. Some implications stemming from the existence of two phases and the related first-order phase transition are discussed.
