2 papers
hep-ph2026
Probing the small-scale primordial power spectrum via relic neutrinos and acoustic reheating
Giovanni Piccoli, Sunny Vagnozzi, Joseph Silk
We show that the dissipation of small-scale perturbations through diffusion damping after neutrino decoupling lowers the present-day neutrino temperature compared to the expected v…
astro-ph.CO2026
Detecting Axion-like particles using Cosmic Variance Cancellation with CMB and Radio surveys
Harsh Mehta, Anaya Dixit, Suvodip Mukherjee +1
Axions and axion-like particles (ALPs) arise naturally in many extensions of the Standard Model and are among the well-motivated candidates for dark matter. In the presence of magn…