Hey, my name is Thomas and right now I am a PhD student in the group of Prof. Achim Rosch at the University of Cologne. When I did my bachelor studies, I thought that experimental physics and theoretical physics were two completely separated fields which have nothing in common. My perception was that once you specialize in one of the two during your master studies (for me this was theoretical physics) you never hear about the other again. The truth couldn’t be further from that perception…