Oxford, Fabian Essler C6 physics notes
Advances in Graphene, Majorana fermions, Quantum computation
New questions in quantum field theory from condensed matter theory
Ideal Fermi gas
Weakly interacting bose gas
From Hamiltonian can derive Gross-Pitaevskii equation
http://www.nii.ac.jp/qis/first-quantum/forStudents/lecture/pdf/qis385/QIS385_chap4.pdf
Bogoliubov approximation
Alternative using density matrix..
Spin waves in ferromagnets