41 citations · 136 across the 11 of their papers we have counts for
3 papers · 1 filter
A CMB Millikan Experiment with Cosmic Axiverse Strings
Prateek Agrawal, Anson Hook, Junwu Huang
We study axion strings of hyperlight axions coupled to photons. Hyperlight axions -- axions lighter than Hubble at recombination -- are a generic prediction of the string axiverse.…
Tension, Swampland Conjectures and the Epoch of Fading Dark Matter
Prateek Agrawal, Georges Obied, Cumrun Vafa
Motivated by the swampland dS conjecture, we consider a rolling scalar field as the source of dark energy. Furthermore, the swampland distance conjecture suggests that the rolling…
Rock 'n' Roll Solutions to the Hubble Tension
Prateek Agrawal, Francis-Yan Cyr-Racine, David Pinner +1
Local measurements of the Hubble parameter are increasingly in tension with the value inferred from a CDM fit to the cosmic microwave background (CMB) data. In this paper, we co…