717 citations · 4.8k across the 112 of their papers we have counts for
4 papers · 2 filters
Gravitational Waves Probes of Parity Violation in Compact Binary Coalescence
Stephon H. Alexander, Nicolas Yunes
Is gravity parity violating? Given the recent observations of gravitational waves from coalescing compact binaries, we develop a strategy to find an answer with current and future…
On the Classical and Quantum Stability of a Cosmic Ghost
Stephon Alexander, Sam Cormack, David Lowe +1
Ghost fields have reemerged in a handful of phenomenologically motivated cosmological and particle physics scenarios, and most recently in a cyclic mechanism to address the fine-tu…
On a Relation of Vacuum Energy to the Hierarchy of Forces
Stephon Alexander, Laura Mersini-Houghton
We investigate the relation between vacuum energy and the hierarchy of forces in habitable universes. The hierarchy of forces studied in \cite{fred} was bound by $\frac{α_G}α \le 1…
V-mode Polarization in Axion Inflation and Preheating
Stephon Alexander, Evan McDonough, Robert Sims
We study the production of primordial circular ("V-mode") polarization in axion inflation coupled to fermions and gauge fields, with special attention paid to (p)reheating. We cons…