2 papers
astro-ph.CO2026
Optimal Transport Reconstruction of Biased Tracers in Primordial Non-Gaussian Fields
Farnik Nikakhtar, Ravi K. Sheth, Nikhil Padmanabhan +2
Optimal transport provides an efficient method to infer the displacement of objects by mapping their initial positions to their present-day locations over cosmic time; equivalently…
astro-ph.CO2024
Probing primordial non-Gaussianity by reconstructing the initial conditions
Xinyi Chen, Nikhil Padmanabhan, Daniel J. Eisenstein
We propose to constrain the primordial (local-type) non-Gaussianity signal by first reconstructing the initial density field to remove the late time non-Gaussianities introduced by…