Modelling the clustering of dark matter haloes in resummed perturbation theories
Modelling the clustering of dark matter haloes in resummed perturbation theories
复制标题
在恢复微扰理论中模拟暗物质晕的聚集
DOI:
10.1111/j.1365-2966.2011.18761.x
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发表时间:
2011
影响因子:
4.8
通讯作者:
S. Matarrese
中科院分区:
文献类型:
--
作者:
A. Elia;S. Kulkarni;C. Porciani;M. Pietroni;S. Matarrese
We address the issue of the cosmological bias between matter and galaxy distributions, looking at dark matter haloes as a first step to characterize galaxy clustering. Starting from the linear density field at high redshift, we follow the centre-of-mass trajectory of the material that will form each halo at late times (protohalo). We adopt a fluid-like description for the evolution of perturbations in the protohalo distribution, which is coupled to the matter density field via gravity. We present analytical solutions for the density and velocity fields, in the context of renormalized perturbation theory. We start from the linear solution, then compute one-loop corrections for the propagator and the power spectrum. Finally, we analytically resum the propagator, and we use a suitable extension of the time-renormalization-group method to resum the power spectrum. For halo massesM< 1014h−1M⊙, our results atz= 0 are in good agreement withN-body simulations. Our model is able to predict the halo–matter cross-spectrum with an accuracy of 5 per cent up tok≈ 0.1hMpc−1approaching the requirements of future galaxy redshift surveys.
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DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
C. Porciani;P. Catelan;C. Lacey
通讯作者:
C. Lacey
DOI:
10.1111/j.1365-2966.2006.11385.x
发表时间:
2006
影响因子:
4.8
作者:
J. Guzik;G. Bernstein;R. Smith
通讯作者:
R. Smith
DOI:
10.1046/j.1365-8711.2000.04023.x
发表时间:
2000
影响因子:
4.8
作者:
P. Catelan;C. Porciani;M. Kamionkowski
通讯作者:
M. Kamionkowski
影响因子:
6.4
作者:
N. Sugiyama
通讯作者:
N. Sugiyama
影响因子:
3.5
作者:
A. Schulz;M. White
通讯作者:
M. White