Symmetry in quantum mechanics: Symmetries, conservation laws, and degeneracies. Discreet symmetries, parity. Lattice translation, Time –Reversal.
Identical particles: Permutation symmetry, Symmetrization postulate, two-electron system. The Helium atom. Permutation symmetry and Young Tableaux.
Scattering theory: The Lippmann-Schwinger equation, The Born approximation, Optical theorem. Methods of partial waves, Low energy scattering and bound states, Resonance scattering. Identical particles and scattering, Coulomb scattering
