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Primordial features from linear to nonlinear scales

2019; American Physical Society; Volume: 1; Issue: 3 Linguagem: Inglês

10.1103/physrevresearch.1.033209

2643-1564

Florian Beutler, Matteo Biagetti, Daniel Green, Anže Slosar, Benjamin Wallisch,

Radio Astronomy Observations and Technology

Oscillatory features in the power spectrum of primordial density fluctuations are an important signature of inflationary physics and are often tied to the origin of inflation itself. The authors provide a treatment of how to search for these features in the distribution of galaxies in the late-time universe. This includes the insight that the impact of nonlinear evolution of the density fluctuations is a tractable problem. As a consequence, they are able to use the full statistical power of the currently largest galaxy survey BOSS