Basically what the title says. I am a junior in high school and am planning on taking AP physics my senior year and I also want to go to college for Physics (of course). But my goal is to get a Ph.D and get a job somewhere as a theoretical physicist. This is the problem though. I'm fairly certain that there isn't a major you can pick in college that says "theoretical physics". So my question to you guys is, what major should I pick if I want to be a theoretical physicist in the long run? My ultimate goal in my life is to reconcile QM with Einstein's General Theory of Relativity. Yeah yeah it's funny I know but like the saying goes, you won't get high up there unless you aim high. Any answers will be much appreciated.