Constraining Axion-like Particles through Multi-epoch Monitoring of Strong Gravitational Lenses

Shivani Deshmukh, Aritra Basu, Dominik J. Schwarz +2

We present new constraints on ultralight axion-like particles (ALPs) through multi-epoch measurements of differential birefringence induced due to a coupling ($g_{a{\hat{I}}^3}$) between th…