Non-linear cosmological information can be effectively extracted by jointly analyzing the pre- and post-reconstruction power spectra of large-scale structure. In this work, we present measurements of the pre- and post-reconstruction power spectra, as well as cross power spectrum between the density fields before and after the reconstruction in the Luminous Red Galaxies (LRGs) of the DESI DR1...
Recent reports of cosmological parity violation in the four-point correlation function (4PCF) raise the question of how such violations could be systematically generated. Here we present a constructive procedure to generate arbitrary violations of vectorial and tensorial types on any scale, which is computationally efficient in the squeezed limit. We directly compute their numerical transfer...
We apply a halo velocity bias model, $\gamma_{f}$, within the Aemulus simulation suite for General Relativity (GR) to investigate its efficacy in identifying the signature of assembly bias and Modified Gravity (MG). In the investigation of assembly bias, utilizing galaxy clustering data ranging from scales of $0.1 \sim 60 h^{-1}{\rm {Mpc}}$, we discover that our emulator model accurately...
