New constraints on cosmological modified gravity theories from anisotropic three-point correlation functions of BOSS DR12 galaxies
New constraints on cosmological modified gravity theories from anisotropic three-point correlation functions of BOSS DR12 galaxies
复制标题
BOSS DR12星系各向异性三点相关函数对宇宙学修正引力理论的新约束
DOI：
10.1093/mnras/stad1505
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发表时间：
2023
影响因子：
4.8
通讯作者：
Seo, Hee-Jong
中科院分区：
文献类型：
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作者：
Sugiyama, Naonori S;Yamauchi, Daisuke;Kobayashi, Tsutomu;Fujita, Tomohiro;Arai, Shun;Hirano, Shin’ichi;Saito, Shun;Beutler, Florian;Seo, Hee-Jong
我们报道了利用宇宙的大尺度结构对修正的引力理论进行的一项新测试。本文首次尝试(1)将星系两点和三点关联函数(2和3PCF)各向异性分量的联合分析应用于实际星系数据；(2)约束简并高阶标量张量(DHOST)理论在宇宙学尺度上的非线性效应。将这一分析应用于重子振荡谱调查(BOSS)第12版数据，我们得到了−1.655<；ξt和−0.504<；ξ在表征二阶速度场的潮汐项和移动项的时间演化的参数上的可信下限。这些约束条件与ξt=15/1144和ξS=0的GR预测一致。此外，与仅使用各向同性3PCF的联合分析相比，它们分别代表了35倍和20倍的改进。我们通过考察各种物理量，包括3PCF的理论模型、窗函数修正、累积的S/N、Fisher矩阵以及模拟数据的统计散射效应，来确保我们的结果的有效性。我们还发现BOSS数据和3PCF测量的零星模拟之间存在统计上的显著差异。最后，我们将我们所有的3PCF分析代码打包成Hitomi的名称，并将它们公开提供，以便读者可以复制本文的所有结果，并轻松地将它们应用于正在进行的未来星系调查。
We report a new test of modified gravity theories using the large-scale structure of the Universe. This paper is the first attempt to (1) apply a joint analysis of the anisotropic components of galaxy two- and three-point correlation functions (2 and 3PCFs) to actual galaxy data and (2) constrain the non-linear effects of degenerate higher-order scalar-tensor (DHOST) theories on cosmological scales. Applying this analysis to the Baryon Oscillation Spectroscopic Survey (BOSS) data release 12, we obtain the lower bounds of −1.655 < ξtand −0.504 < ξsat theconfidence level on the parameters characterizing the time evolution of the tidal and shift terms of the second-order velocity field. These constraints are consistent with GR predictions of ξt= 15/1144 and ξs= 0. Moreover, they represent a 35-fold and 20-fold improvement, respectively, over the joint analysis with only the isotropic 3PCF. We ensure the validity of our results by investigating various quantities, including theoretical models of the 3PCF, window function corrections, cumulative S/N, Fisher matrices, and statistical scattering effects of mock simulation data. We also find statistically significant discrepancies between the BOSS data and the Patchy mocks for the 3PCF measurement. Finally, we package all of our 3PCF analysis codes under the namehitomiand make them publicly available so that readers can reproduce all the results of this paper and easily apply them to ongoing future galaxy surveys.