Angular Momentum: raising and lowering operat...
spin operators, Lamor precession, Stern-Gerla...
adding together the spin of two spin half par...
identical particles, atoms, and the periodic ...
free electron gas, Fermi surface, white dwarf...
white dwarfs continued, neutron stars, most p...
Fermi-Dirac, Bose-Einstein distributions, exp...
time-independent, non-degenerate, perturbatio...
linear and cubic perturbations of the simple ...
helium revisited, two-fold degeneracy, and a ...