Problems and Solutions in Graduate Physics Electrodynamics Quantum Field Theory Condensed Matter General Relativity Jacob Bourjaily's Home Page	Disclaimer: These are solutions prepared by Jacob Bourjaily for coursework done at Princeton University during the fall of 2006. They are intended for academic use only. They are to be used as reference only. Please, do not copy solutions and submit them as your own. I make no guarantee as to their correctness, but if errors are found, I would appreciate notice by email. These are sanctioned neither by the author(s) of the relevant text books, nor by the professors who assigned them to me. These solutions reflect assignments made by Professor David Huse at Princeton University during his semester course on Condensed Matter Physics during the fall of 2006. There are certainly faults in the homeworks (and several solutions that could have been obtained much more directly); but in general, I have tried to correct any any mistakes noticed by the grader. The assignments were rather creative (and difficult) and generally did not come out of the course textbook, Ashcroft and Mermin's Solid State Physics. Therefore, the problems will simply be presented as assigned. I hope these prove useful! All Solutions Homework 1 Homework 2 Homework 3 Homework 4 Homework 5 Homework 6 Homework 7 Homework 8