Astrophysics
Condensed Matter Physics
High Energy Physics
Theoretical Physics
Mathematical Physics
Atmospheric Physics
Nuclear Physics
Meteor Physics
Circuit Physics (basically electrical engineering)
Classical Physics
Electromagnetism
Nano-physics
I don't know what else to tell you, put any *reasonable* word in front of 'physics' and you get a field that if you go far enough in depth you will encounter high end physics and math.
If you're looking for a specific field in which to study at the undergrad level then you can usually only choose from General Physics and Astrophysics, some colleges will over materials science, nanotechnology, and maybe atmospheric physics. But you will never specialize to a specific field like above until graduate school