Yes of course , but You simply can't do truely interesting stuff unless you know Quantum field theory and the gravitational force if you want to do string theory . You have to be comfortable with hand-waving not rigorously defining and proving every thing .
Theoretical Physics? What is that?<br />
I'm sorry. I'll probably know someday, but for now, this goes beyond my freshman-in-highschool level education.
yeah, its possible. Go research, nothings stopping you. You dont even need an education, just an imagination, and a firm grip on reality at the same time ha.