Constraints on Multi-Field Inflation from the BOSS Galaxy Survey

Understand

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.