论文标题
游览集模型超出了：环境依赖性
The excursion set model a step beyond: Environmental dependence
论文作者
论文摘要
在游览集模型方面，我们使用了蒙特卡洛方法，以研究平滑的过度密度$δ$在calace $ s $下的非马克维亚随机演变。对于高斯密度场，在真实空间中通过顶帽滤波器平滑，我们使用了随机步行，并在尺度之间具有正确的相关性，以计算约束概率并将结构数与环境的过度密度连接起来。使用恒定的屏障，低于通常的屏障，但它可以提高我们与N体模拟的结果的一致性。我们目前的比较多数函数的比较与N体模拟所产生的功能以及后代光晕的数量密度以及它们的祖细胞的密度以及它们的大量环境的密度相关。光环。对于大晕环的较大环境密度，这一数字增加，而小光环的数量会减少。这些光环的祖细胞数对它们大环境的过度密度不敏感。
In terms of the excursion set model, we used Monte Carlo methods in order to study the non-Markovian stochastic evolution of the smoothed overdensity $δ$ at scale $S$. For a Gaussian density field, smoothed by the top-hat filter, in real space, we used random walks, with the correct correlation between scales, in order to calculate constrained probabilities and to connect the number of structures with the overdensity of their environment. A constant barrier is used, lower than the usual one but which improves the consistency of our results with those of N-body simulations.We present comparisons of multiplicity functions with those resulting from N-body simulations as well as number densities of descendant haloes and of their progenitors and we connect them to the density of their large environment.There exists a dependence of the number of haloes on their environment which is different for different masses of these haloes.This number increases for larger overdensity of the environment for large haloes and decreases for small ones. The number of progenitors of these haloes is insensitive to the overdensity of their large environment.
