Problems in Quantum Mechanics

anti-symmetrical approximation asymptotic axis bound calculate Chapter coefficients components condition constant coordinates corresponding Coulomb defined denote differential cross-section dipole Dirac equation E₁ eigenfunctions eigenvalues eigenvectors electron energy levels expression follows free particle function given Hamiltonian harmonic oscillator hence Hermitian hydrogen atom hydrogen-like atom integral equation interaction isotopic spin kinetic energy Klein-Gordon equation linear magnetic field matrix elements motion n₁ non-relativistic nucleons nucleus obtain operator orbital angular momentum P. A. M. DIRAC P₁ permutation perturbation theory poles potential energy preceding problem probability protons Quantum Mechanics quantum number R₁ relation representation result rotation satisfies scattering amplitude scattering cross-section Schrödinger equation second quantization Show sin² solution spherical symmetrical t₁ time-dependent transformation unperturbed valid vanishes variables vector wavefunction whence WKB approximation written Y₁ zero Απ ду