报告题目：Simulations of Bosonic Dark Matter

报  告 人：陈家骏 （西南大学）

报告时间：2025年3月28日(星期五)下午15:00

报告地点：激光光谱研究所三层报告厅

报告简介：

      This talk discusses simulations of bosonic dark matter, focusing on the condensation and evolution of halos and boson stars, as well as the polarization evolution of vector dark matter. The background section highlights the nature of cold dark matter, its problems, and possible solutions like warm dark matter, self-interacting dark matter, and ultra-light axions. It introduces axion-like particles and the mathematical framework used to model their behavior. The first part addresses the formation and evolution of halos and boson stars, with detailed discussion on condensation, growth rates, and the role of self-interaction in shaping these structures. The formation of multiple boson stars due to gravity and self-interactions is also explored.The second part explores the polarization evolution of vector dark matter. It examines how different initial conditions affect the formation of Proca stars, and how spin and polarization evolve over time. The talk shows that the density of vector dark matter correlates closely with polarization density, and that Proca stars can form due to spin in one direction, leading to a spin reversal in the outer regions.

报告人简介：

       陈家骏，西南大学讲师。2012年山西大学本科毕业；2016年中国人民大学硕士毕业，导师朱传界教授；2021年德国哥廷根大学博士毕业，导师Jens C. Niemeyer 教授，David J. E. Marsh 教授。2022年1月加盟西南大学。研究兴趣主要为暗物质的候选粒子，轴子（axion），在宇宙学尺度下的数值模拟。包括玻色暗物质晕和玻色星的形成以及演化，星系形成中的量子湍流等。