I'm looking for a pedagogic introduction to d-wave superconductivity on the level of field theory.
Ideally, this would involve a derivation of d-wave superconductivity and the form of the gap parameter from some fundamental Hamiltonian (if such a derivation is even possible yet).
Books and...
I'm working through Schakel's 'Boulevard of broken symmetries' and I don't get an equation connect to the Coulomb gas problem.
The equation in question is (5.77) on page 161.
Luckily, you may look it up in...