Primordial Non-Gaussianities and Zero-Bias Tracers of the Large-Scale Structure
Primordial Non-Gaussianities and Zero-Bias Tracers of the Large-Scale Structure
We develop a new method to constrain primordial non-Gaussianities of the local kind using unclustered tracers of the large scale structure. We show that, in the limit of low noise, zero bias tracers yield large improvement over standard methods, mostly due to vanishing sampling variance. We propose a simple technique …