Yeah, there are plenty of students in the profile thread with backgrounds similar enough to yours - state school students with top GPAs, good research experience who consider the GRE to be the weak point of their record. You could learn a lot by reading where they applied and got accepted to.
When I was at U. Idaho for a REU program, they talked about the GRE at one of our weekly meetings. And most of the talk was not so much about the test itself, but them telling us not to lose hope if we don't do well and that it's not the "only" factor in the admissions process, and that if we do well in "real" research like we were doing in their program, we can succeed bla bla bla...
So basically, even though the GRE is the most uniform, objective measure they have, for all but the top maybe 25 schools it seems they expect all domestic students to score low so I don't think your GRE will keep you out, you could have a good chance at any of them... However, if you think you can improve significantly on 550 by taking it again, I suggest you try.
ggh1213 wrote:My search is not limited to American schools, only English-speaking schools.
There are no English-speaking physics departments even in America.