4 papers · 1 filter
New Isocurvature Constraints from JWST UV Luminosity Function
Raymond T. Co, Sai Chaitanya Tadepalli
We constrain uncorrelated primordial isocurvature perturbations using a combination of large- and small-scale cosmological probes, with the small-scale data provided by the ultravi…
Reviving sub-keV warm dark matter: a UVLF-based analysis
Raymond T. Co, Siu Cheung Lam, Sai Chaitanya Tadepalli +1
Thermal warm dark matter (WDM) particles with are ruled out at more than by multiple observational probes, owing to the strong suppression o…
Warm Dark Matter meets Cold Dark Matter Isocurvature
Sai Chaitanya Tadepalli, Tomo Takahashi
Isocurvature fluctuations can be generated in various scenarios in the early Universe. In particular, some specific models predict those with a blue-tilted spectrum, which is consi…
Non-Gaussianity from explicit -breaking interactions
Raymond T. Co, Taegyu Lee, Sai Chaitanya Tadepalli
We investigate primordial non-Gaussianity (NG) arising from the explicit symmetry-breaking interactions during inflation involving a nearly massless axial component of a com…