asimulation：(a)symmetron可分辨宇宙学模拟中的域形成及其对观测量的影响
asimulation: Domain formation and impact on observables in resolved cosmological simulations of the (a)symmetron
AI总结：
本文使用相对论性N体代码asevolution对(a)symmetron进行高分辨率模拟，确定了域分解和域墙稳定性的收敛标准，并分析了标量场与域墙行为对物质功率谱、HMFs及光锥观测量的影响。
摘要：
symmetron是一种暗能量和暗物质候选者，它在晚期宇宙中形成拓扑缺陷，并有望解决一些宇宙学矛盾。我们使用最近开发的相对论性N体代码asevolution，对动力学和非线性的(a)symmetron进行了高分辨率模拟。通过广泛测试域分解和域墙稳定性的时间与空间收敛性，我们确定了收敛的标准和物理直觉。我们应用这些分辨率标准，运行了五个使用1280^3网格、盒大小为500 Mpc/h的(a)symmetron高分辨率模拟。我们考虑了每种场景中标量场和域墙的行为。我们发现，与LCDM相比，它对物质功率谱、HMFs以及在观测者过去光锥上计算的观测量的影响，例如积分Sachs-Wolfe和非线性Rees-Sciama效应以及透镜效应。我们展示了第五力强度的局部振荡以及密度场中平面结构的形成。该场的动力学在时间分辨率高的动画中进行了可视化。模拟代码已公开发布。
英文摘要：
The symmetron is a dark energy and dark matter candidate that forms topological defects in the late-time universe and holds the promise of resolving some of the cosmological tensions. We performed high-resolution simulations of the dynamical and non-linear (a)symmetron using the recently developed relativistic N-body code asevolution. By extensively testing the temporal and spatial convergence of domain decompositioning and domain wall stability, we determined criteria and physical intuition for the convergence. We applied the resolution criteria to run five high-resolution simulations with 1280^3 grids and a box size of 500 Mpc/h of the (a)symmetron. We considered the behaviour of the scalar field and the domain walls in each scenario. We find the effect on the matter power spectra, the HMFs, and observables computed over the past light cone of an observer, such as the integrated Sachs-Wolfe and non-linear Rees-Sciama effect and the lensing, compared to LCDM. We show local oscillations of the fifth force strength and the formation of planar structures in the density field. The dynamics of the field was visualised in animations with high resolution in time. The simulation code is made publicly available.
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