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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
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