The dependence of galaxy clustering on local density provides an effective method for
extracting non-Gaussian information from galaxy surveys. The two-point correlation function …

Shortly after its discovery, General Relativity (GR) was applied to predict the behavior of our
Universe on the largest scales, and later became the foundation of modern cosmology. Its …

We discuss the constraints imposed on the nonlinear evolution of the Large Scale Structure
(LSS) of the universe by galilean invariance, the symmetry relevant on subhorizon scales …

We present a measurement of the cross-correlation between the MagLim galaxies selected
from the Dark Energy Survey (DES) first three years of observations (Y3) and cosmic …

Accurate modelling of redshift-space distortions (RSD) is challenging in the non-linear
regime for two-point statistics eg the two-point correlation function (2PCF). We take a …

We present nonlinear solutions of Vlasov perturbation theory (VPT), describing gravitational
clustering of collisionless dark matter with dispersion and higher cumulants induced by orbit …

The studies of disordered heterogeneous media and galaxy cosmology share a common
goal: analyzing the disordered distribution of particles and/or building blocks at microscales …

We present a first principle approach to obtain analytical predictions for spherically
averaged cosmic densities in the mildly non-linear regime that go well beyond what is …

We present the first cosmological measurement derived from a galaxy density field subject to
a “clipping” transformation. By enforcing an upper bound on the galaxy number density field …

Cosmological perturbations of sufficiently long wavelength admit a fluid dynamic description.
We consider modes with wavevectors below a scale km for which the dynamics is only …