标题： 关于超出$Λ$CDM 宇宙学的晕质量函数的普遍性 显示英文标题

标题： On the universality of the halo mass function beyond $Λ$CDM cosmology

摘要： 基于Press-Schechter形式化理论和随机行走论点的理论框架表明，当用峰值高度表示时，暗物质晕的丰度表现出普遍行为。 如果属实，这意味着一个高精度的宇宙学模拟可以作为构建适用于任何其他感兴趣宇宙学的模拟器的基础。 这一令人着迷的可能性多年来激发了许多研究。 然而，在实践中，定义晕的不同方法导致了关于此问题的不一致结果。 在本工作中，我们利用一组高分辨率的宇宙学$N$-体模拟，重新审视这一问题，在平坦的时间演化$w$CDM 模型下，通过改变标量谱指数及其运行来简单修改原始物理条件，针对朋友-朋友晕进行研究。 我们从基准的${\Lambda}$CDM 模拟中构建了一个参考轨迹$\nu f(\nu)$，并将其与来自其他模型的测量结果进行比较。 我们发现，当在以下范围内改变各个参数时，偏离轨迹的范围保持在$5 \%$内：${w_0} = -1.0 \pm 0.1$，$w_a = 0\pm0.2$，$\Omega_{\rm DE} = 0.693\pm0.050$，$\omega_{\rm c} = 0.119\pm0.006$，$\omega_{\rm b} =0.0222\pm0.0011$，$A_{\rm s} = (2.15\pm0.22) \times {10^{-9}}$，$n_{\rm s} =0.961\pm0.048$，$\alpha_{\rm s}\ = 0\pm0.01$，对于红移$z < 7$。 显示英文摘要

摘要： Theoretical frameworks based on Press-Schechter formalism and excursion set arguments suggest that the abundance of dark matter haloes exhibits universal behaviour when expressed in terms of peak height. If true, this implies that a single high-accuracy cosmological simulation could serve as a basis for constructing an emulator applicable to any other cosmology of interest. This tantalising possibility has inspired numerous studies over the years. However, in practice, different ways of defining haloes have led to mixed results concerning this issue. In this work, we utilise a suite of high-resolution cosmological $N$-body simulations, to revisit this question for friends-of-friends haloes under the flat, time-evolving $w$CDM model, with simple modifications of the primordial physics via variations in the scalar spectral index and its running. We construct a reference locus of $\nu f(\nu)$ from our fiducial ${\Lambda}$CDM simulation and compare it against measurements from alternative models. We find that deviations from the locus remain within $5 \%$ when varying each of the parameters within the ranges: ${w_0} = -1.0 \pm 0.1$, $w_a = 0\pm0.2$, $\Omega_{\rm DE} = 0.693\pm0.050$, $\omega_{\rm c} = 0.119\pm0.006$, $\omega_{\rm b} =0.0222\pm0.0011$, $A_{\rm s} = (2.15\pm0.22) \times {10^{-9}}$, $n_{\rm s} =0.961\pm0.048$, $\alpha_{\rm s}\ = 0\pm0.01$, for redshift $z < 7$.