Can I get into PhD in Physics with a high GRE score and an unrelated masters degree?
Typically the only reason that PhD granting institutions in the US give out a master's degree en route to the doctorate is the existence of capitation money in some states that reward them for each advanced degree they grant. You don't need a master's degree. I never got one, and I could have for $50 and two weeks spent converting a couple of journal articles to thesis format. Nobody worth talking to expects you to have an MS when you apply.