Hello PF, pardon me if this isn't the wrong place but I just had a quick question. So I have always wanted to do Theoretical Physics (particular interests are Quantum Gravity, Cosmology, QFT and Quantum Optics, but those are subject to change), but recently I have started to look into Mathematical Physics. Apart from finding out that Mathematical Physicists work on String Theory and Cosmology, which are my primary interests, I really don't know whether I would be more suited to Mathematical or Theoretical Physics. So can someone please describe the work that that Theoretical and Mathematical Physicists do, and what is the difference between them? Thanks for any and all replies!