Charalampos Nikolis

I am a PhD student in theoretical physics. I am interested in theoretical aspects of cosmology both in the early and late universe. More precisely, I am currently working on cosmological phase transitions in theories with field dependent couplings, and their implications for axion dark matter as well as their stochastic gravitational wave background signatures. I am also interested in the application of Effective Field Theories (EFTs) in the late universe, as well as the phenomenology of axion like particles.