I am a theoretical physicist and my research is in the interface between cosmology, astrophysics, and high energy physics. My work focuses mostly on studying the dark sector. I am particularly interested on dark matter, focusing on ultra-light dark matter. I am also interested in the late expansion of the universe, studying the phenomenology of dark energy. I also study several topics in early universe cosmology, including the initial singularity, the early evolution of the universe, and reheating. Testing those models using the current observational probes and new observational windows is also part of my research.