论文标题
非线性宇宙结构，具有通过改良重力的超轻玻色子
Nonlinear cosmological structure with ultralight bosons via modified gravity
论文作者
论文摘要
由于暗物质，由于在线性和非线性尺度下，在宇宙结构中可能具有独特的特征，因此超光玻色子已成为宇宙学的主要兴趣模型。在这项工作中，我们表明，这种模型的密度扰动运动方程可以用修改后的重力潜力来编写。利用这种并行性，我们使用最初为修改的重力模型开发的MG-Picola代码来进化具有和不进行自我相互作用的轴突模型的密度场。我们的结果表明，量子电位在非线性水平上增加了对功率的额外抑制作用，甚至能够平滑质量功率谱中最初存在的任何颠簸特征。
Ultra-light bosons as dark matter has become a model of major interest in Cosmology, due to the possible imprint of a distinct signature in the cosmic structure both at the linear and non-linear scales. In this work we show that the equations of motion for density perturbations for this kind of models can be written in terms of a modified gravitational potential. Taking advantage of this parallelism, we use the MG-PICOLA code originally developed for modified gravity models to evolve the density field of axion models with and without self-interaction. Our results indicate that the quantum potential adds extra suppression of power at the non-linear level, and it is even capable of smoothing any bumpy features initially present in the mass power spectrum.
