论文标题
老板银河调查对多场通货膨胀的限制
Constraints on Multi-Field Inflation from the BOSS Galaxy Survey
论文作者
论文摘要
我们使用来自Boss调查的红移空间星系聚类数据来限制局部原始非高斯性（LPNG）。由于一致性关系，这一点尤其重要，这意味着对LPNG的检测将排除所有单场通货膨胀模型。我们的限制基于一致分析的红移空间星系功率谱和Bispectra，并从公共老板数据中提取了最佳的无窗口估计器。我们使用一个完整的扰动理论模型，包括LPNG产生的所有一环功率谱校正。我们对本地非高斯形状幅度的限制为$ f _ {\ rm nl}^{\ rm local} = - 33 \ pm 28 $在68 \％\，Cl，Cl，没有任何原始非高斯性的证据。 Biseptrum的添加使$ f _ {\ rm nl}^{\ rm local} $从boss的约束$ 20 \％$，并允许用非高斯银河系偏见破裂。这些结果为分析未来调查的阶段奠定了基础，其较大的体积将在LPNG上产生明显更严格的限制。
We use redshift-space galaxy clustering data from the BOSS survey to constrain local primordial non-Gaussianity (LPNG). This is of particular importance due to the consistency relations, which imply that a detection of LPNG would rule out all single-field inflationary models. Our constraints are based on the consistently analyzed redshift-space galaxy power spectra and bispectra, extracted from the public BOSS data with optimal window-free estimators. We use a complete perturbation theory model including all one-loop power spectrum corrections generated by LPNG. Our constraint on the amplitude of the local non-Gaussian shape is $f_{\rm NL}^{\rm local}=-33\pm 28$ at 68\%\,CL, yielding no evidence for primordial non-Gaussianity. The addition of the bispectrum tightens the $f_{\rm NL}^{\rm local}$ constraints from BOSS by $20\%$, and allows breaking of degeneracies with non-Gaussian galaxy bias. These results set the stage for the analysis of future surveys, whose larger volumes will yield significantly tighter constraints on LPNG.
