Physics =/= philosophy
However for once I agree with you.
I think smartcooky is right (thank you, smartcooky). However, forI think you've made a common mistake here.Physics =/= philosophy
The term "Philosophy" in "Ph.D" is NOT the subject, its the level of achievement in a subject.
You can have a PhD in Physics, Mathematics, Applied Mathematics, etc.
http://www.sciencedirect.com/science/article/pii/0375947485902052
I noticed also that my Ph.D. thesis is mentioned in Google Books:
http://books.google.be/books/about/...copic_Theory.html?id=eEeNtgAACAAJ&redir_esc=y