期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 10, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2020/10/059
关键词
cosmological parameters from LSS; power spectrum; galaxy clustering; galaxy clusters
资金
- JSPS KAKENHI [17J09103, 18K13537]
- Grants-in-Aid for Scientific Research [18K13537, 17J09103] Funding Source: KAKEN
We develop a simple formalism of biased tracers that we dub Monkey bias. In this formalism, a biased tracer field is constructed directly in terms of the linear matter fluctuation field and the set of derivative operators acting on it. Such bias expansion is first organized based on the general structure of non-linear dynamical equations for the biased tracers. Further physical conditions, like the equivalence principle, are imposed on tree-level correlators utilising the consistency relations. We obtain the bias expansion up to the third-order in linear matter fluctuation in the generalized Lambda CDM background, which reproduces the previous results in the limit of the FAS universe. This algorithmic construction of our bias operator basis is well suited for extensions towards higher-order bias fields. Moreover, this formalism reveals that biased tracer dynamics in generalized Lambda CDM background is not entirely degenerate with the rest of bias parameters, thus opening a possibility of testing the background cosmology through the observations of biased tracers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据