Showing 2026Show all
2 papers · 1 filter
hep-ph2026
Axions on a Hyperbolic Ride: Geometric Suppression of CMB Isocurvature and a Blue-Tilted Spectrum
Sai Chaitanya Tadepalli
CMB limits on cold-dark-matter isocurvature are often interpreted as excluding the simultaneous realization of high-scale inflation and large QCD axion decay constants in pre-infla…
astro-ph.CO2026
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…