Gravitational Waves are my current obsession. More specifically: what can we learn about dark matter using gravitational wave phenomenology? As gravitational interactions are the defining property of dark particles, gravitational wave studies are fully complementary to the conventional (direct, indirect, and collider) probes of dark matter, which depend crucially on the hypothesis of electroweak or strong interactions with visible matter.
I also work on Early Universe Cosmology (cosmic inflation and reheating), Composite Higgs models and ElectroWeak Symmetry Breaking.