论文标题
测试标量场暗物质的平均场理论
Testing the mean field theory of scalar field dark matter
论文作者
论文摘要
标量田间暗物质提供了传统的WIMP暗物质图片的有趣替代方法。天体物理和宇宙学模拟可用于限制该模型中暗物质粒子的质量。在低质量下，暗物质粒子在天体物理尺度上表现出的波浪性质尤其如此。这些模拟典型使用经典字段近似。在这项工作中，我们研究将这些模拟扩展到包括量子校正。我们研究了大校正影响标量场暗物质的预测的方式，以及这些校正较大的时间尺度。校正往往会降低密度波动并增加“量子压力”的效果。在崩溃期间，这些校正呈指数增长，量子校正在大约30个动态时期将变得很重要。这意味着经典场模拟的预测可能与具有短动力学时间的系统的量子校正的预测可能有所不同。
Scalar field dark matter offers an interesting alternative to the traditional WIMP dark matter picture. Astrophysical and cosmological simulations are useful to constraining the mass of the dark matter particle in this model. This is particularly true at low mass where the wavelike nature of the dark matter particle manifests on astrophysical scales. These simulations typical use a classical field approximation. In this work, we look at extending these simulations to include quantum corrections. We look into both the ways in which large corrections impact the predictions of scalar field dark matter, and the timescales on which these corrections grow large. Corrections tend to lessen density fluctuations and increase the effect of "quantum pressure". During collapse, these corrections grow exponentially, quantum corrections would become important in about ~30 dynamical times. This implies that the predictions of classical field simulations may differ from those with quantum corrections for systems with short dynamical times.
