论文标题
斧头微量簇及其在银河系中的生存的自一致的浪潮描述
A self-consistent wave description of axion miniclusters and their survival in the galaxy
论文作者
论文摘要
我们为波函数提供了基于WKB ANSATZ的Schrödinger-Poisson系统的解决方案。通过这种方式，我们通过与随机相位的能量本征的叠加来获取重力结合的轴突暗物质团块。它可以应用于Eddington公式相关的任何自洽的径向密度分布和相位空间密度$ f（e）$。我们将其作为银河系中的轴突微量簇的模型，并使用它通过使用量子力学已知的标准扰动理论方法来研究由于恒星遇到的群体损失。最后，我们进行了一项蒙特卡洛研究，以估计我们银河系的暗物质光环中的轴突微量簇的存活部分。我们发现对扰动的反应和生存概率至关重要取决于密度曲线。弱绑定的簇被加热并最终被破坏，而由于扰动的结果，更强大的绑定系统变得更加紧凑，并朝着轴突星形配置驱动。
We present a solution of the Schrödinger-Poisson system based on the WKB ansatz for the wave function. In this way we obtain a description of a gravitationally bound clump of axion dark matter by a superposition of energy eigenstates with random phases. It can be applied to any self-consistent pair of radial density distribution and phase space density $f(E)$ related by Eddington's formula. We adopt this as a model for axion miniclusters in our galaxy and use it to study the mass loss due to a star encounter by using standard perturbation theory methods known from quantum mechanics. Finally, we perform a Monte Carlo study to estimate the surviving fraction of axion miniclusters in the dark matter halo of our galaxy. We find that the reaction to perturbations and the survival probability depend crucially on the density profile. Weakly bound clusters are heated up and eventually destroyed, whereas more strongly bound systems get even more compact as a result of perturbations and are driven towards an axion star configuration.
