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报告摘要：
Primordial black holes are widely considered as a hypothetical candidate of dark matter. However, the formation and astrophysical effects of primordial black holes remain mysterious. To gain the insights from the theoretical perspective, recently a novel mechanism of the sound speed resonance cosmology was proposed that allows for an efficient production of primordial black holes. I will briefly review the sound speed resonance cosmology and summarize what we have learned in this subject so far. I will also introduce a recent application of the nonlinear resonance effect into primordial gravitational waves. Our discovery reveals that the probe for new physics in the very early universe via the nonlinear production of primordial gravitational waves can be promising in the forthcoming cosmic microwave background experiments.
个人简介：
蔡一夫，中国科学技术大学教授。 2010年于中国科学院高能物理研究所获得博士学位。曾获国家创新人才青年项目和基金委优秀青年基金资助，目前主持科技部国家重点研发计划引力波专项。研究领域是粒子宇宙学。兴趣集中在宇宙起源、大尺度结构的早期形成、暗物质暗能量等方面。在国际核心期刊已发表学术论文140余篇，总被引用9000余次。
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