论文标题
从老板星系群集数据中限制原始非高斯的限制
Limits on primordial non-Gaussianities from BOSS galaxy-clustering data
论文作者
论文摘要
我们使用$ \ textIt {act of textIt {and} $ power spectrum $ \ textit {and} $ the Biseptrum从一环订购的有效现场理论中分析了Boss Galaxy聚类数据的功率谱和双光谱。凭借$λ$ CDM参数固定在Planck首选值中，我们将许多通货膨胀模型预测的三个非高斯式模板设置限制：等边，正交和局部形状。验证了对模拟的分析后，我们发现$ f _ {\ rm nl}^{\ rm equil。} = 207 \ pm 292 \，，f _ {\ rm nl}^{\ rm nl}^{\ rm orth。} 34 $，$ 68 \％$置信度。这些基于双光谱的限制来自大规模结构，距离WMAP的结构不远，这表明即将进行的调查有希望的结果。
We analyze the power spectrum and the bispectrum of BOSS galaxy-clustering data using the prediction from the Effective Field Theory of Large-Scale Structure at one-loop order for $\textit{both}$ the power spectrum $\textit{and}$ the bispectrum. With $Λ$CDM parameters fixed to Planck preferred values, we set limits on three templates of non-Gaussianities predicted by many inflationary models: the equilateral, the orthogonal, and the local shapes. After validating our analysis against simulations, we find $f_{\rm NL}^{\rm equil.}= 207 \pm 292\, , f_{\rm NL}^{\rm orth.}= -68 \pm 73\, , f_{\rm NL}^{\rm loc.}= 52 \pm 34$, at $68\%$ confidence level. These bispectrum-based constraints from Large-Scale Structure, not far from the ones of WMAP, suggest promising results from upcoming surveys.
