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Cosmological constraints from harmonic space analysis of DES Y3 3x2 clustering
Utkarsh Giri, Sai Chaitanya Tadepalli
The large-scale distribution of matter, as mapped by photometric surveys like the Dark Energy Survey (DES), serves as a powerful probe into cosmology. It is especially sensitive to…
Power Spectrum in the Chaotic Regime of Axionic Blue Isocurvature Perturbations
Daniel J. H. Chung, Sai Chaitanya Tadepalli
Large blue tilted spectral index axionic isocurvature perturbations can be produced when the axion sector is far out of equilibrium during inflation through an initial Peccei-Quinn…
Search for Isocurvature with Large-scale Structure: A Forecast for Euclid and MegaMapper using EFTofLSS
Daniel J. H. Chung, Moritz Münchmeyer, Sai Chaitanya Tadepalli
Isocurvature perturbations with a blue power spectrum are one of the natural targets for the future large scale structure observations which are probing shorter length scales with…