用层析测量寻找修正的生长模式
Searching for modified growth patterns with tomographic surveys
摘要：
在另一种引力理论中，设计用来在当前时期产生宇宙加速，大尺度结构的生长可以被修改。我们研究的潜力，即将到来的和未来的断层扫描调查，如DES和LSST，与CMB和超新星数据的帮助下，检测偏离预期的宇宙结构的增长在广义相对论。我们采用参数形式来量化潜在的时间和尺度依赖的有效引力常量的变化，和两个牛顿势之间的差异。然后，我们应用Fisher矩阵技术来预测的错误修改后的增长参数从星系团簇，弱透镜，CMB，和它们的交叉相关性在多个光度红移箱。我们发现，即使保守的假设的数据，DES将产生非平凡的约束修改后的增长，LSST会做得更好。
英文摘要：
In alternative theories of gravity, designed to produce cosmic acceleration at the current epoch, the growth of large scale structure can be modified. We study the potential of upcoming and future tomographic surveys such as DES and LSST, with the aid of CMB and supernovae data, to detect departures from the growth of cosmic structure expected within General Relativity. We employ parametric forms to quantify the potential time- and scale-dependent variation of the effective gravitational constant, and the differences between the two Newtonian potentials. We then apply the Fisher matrix technique to forecast the errors on the modified growth parameters from galaxy clustering, weak lensing, CMB, and their cross-correlations across multiple photometric redshift bins. We find that even with conservative assumptions about the data, DES will produce non-trivial constraints on modified growth, and that LSST will do significantly better.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
