晶体缺陷：探测暗物质的一个途径
Crystal Defects: A Portal To Dark Matter Detection
摘要：
我们建议使用常用的高能物理固态探测器中的缺陷产生能量损失作为统计识别背景中的暗物质信号的工具。我们用密度泛函理论和分子动力学方法模拟了缺陷产生过程中的能量损失，并计算了相应的预期暗物质光谱。我们表明，在声子介导的固态探测器，由于缺陷创建卷积与预期的暗物质相互作用信号的能量损失的结果在一个显着的变化，在预期的光谱为常见的探测器材料。随着$\sim$ 10 eV阈值低质量暗物质搜索的最新进展，预期暗物质光谱的这种变化可以用作暗物质与原子核相互作用的直接签名。
英文摘要：
We propose to use the defect creation energy loss in commonly used high energy physics solid state detectors as a tool to statistically identify dark matter signal from background. We simulate the energy loss in the process of defect creation using density functional theory and molecular dynamics methods and calculate the corresponding expected dark matter spectra. We show that in phonon-mediated solid state detectors, the energy loss due to defect creation convolved with the expected dark matter interaction signal results in a significant change in the expected spectra for common detector materials. With recent progress towards $\sim$10 eV threshold low-mass dark matter searches, this variation in expected dark matter spectrum can be used as a direct signature of dark matter interactions with atomic nuclei.
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