What are my chances of getting accepted to Harvard?

If you had really managed to combine the four forces, you would have solved the largest problem in physics in the last 100 years. As an astrophysicist, I think I would have heard about it when you published the paper and put out a press release. Since that hasn't happened, you might be slightly exaggerating your accomplishments. So your chances? Without that claim, maybe 20% or so (better than most). With it? Doubtful.