2 papers
astro-ph.HE2026
High-Density Sound Speed and Post-Merger Dynamics
John Stroud, David Radice, Sanjay Reddy
The density dependence of the speed of sound in cold neutron star matter remains poorly constrained and is central to determining the high-density equation of state (EOS). While bi…
hep-ph2025
Pi in the Sky: Neutron Stars with Exceptionally Light QCD Axions
Mia Kumamoto, Junwu Huang, Christian Drischler +2
We present a comprehensive study of axion condensed neutron stars that arise in models of an exceptionally light axion that couples to quantum chromodynamics (QCD). These axions so…