论文标题
使用N体模拟的Cubic Galileon重力的研究
A study on Cubic Galileon Gravity Using N-body Simulations
论文作者
论文摘要
我们使用N体模拟来研究Cubic Galileon重力模型中的结构形成，其中与通常的动力学和潜在项一起，我们还具有较高的衍生化自我相互作用项。我们发现，大规模结构为该模型提供了独特的约束功率。测量物质功率谱，光晕质量功能，星系 - 果弱透镜信号，明显的密度功率谱以及细胞中的计数。该模拟表明，在立方galileon重力模型中，较小的光环量较小，而不是相应的$λ$ CDM模型，而这两个模型中标记的密度功率谱的差异超过$ 10 \％$。此外，与$λ$ CDM相比，立方体加利昂模型在空隙中显示出显着差异。在Cutic Galileon模型中，低密度细胞的数量远高于$λ$ CDM模型。因此，使用未来的大规模结构观测值，尤其是在空隙区域中对此模型进行约束将很有趣。
We use N-body simulation to study the structure formation in the Cubic Galileon Gravity model where along with the usual kinetic and potential term we also have a higher derivative self-interaction term. We find that the large scale structure provides a unique constraining power for this model. The matter power spectrum, halo mass function, galaxy-galaxy weak lensing signal, marked density power spectrum as well as count in cell are measured. The simulations show that there are less massive halos in the Cubic Galileon Gravity model than corresponding $Λ$CDM model and the marked density power spectrum in these two models are different by more than $10\%$. Furthermore, the Cubic Galileon model shows significant differences in voids compared to $Λ$CDM. The number of low density cells is far higher in the Cubic Galileon model than that in the $Λ$CDM model. Therefore, it would be interesting to put constraints on this model using future large scale structure observations, especially in void regions.
