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Classical Approximation and the WKB Method
The Coulomb Interaction
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algebra angular momentum asymptotic form calculation center-of-mass Classical Mechanics classical particle Classical Theory coefficient collision complete set condition considered constant continuous spectrum coordinates corresponding Coulomb cross section deduced defined definition density derivative discrete spectrum dynamical variables eigenfunctions eigensolutions eigenvalue problem eigenvectors electron energy equal expansion expression finite Fourier transform free particle given Hamiltonian harmonic oscillator Heisenberg Hermitean Hermitean conjugate Hermitean operator Hilbert space infinite integral interval limit linear combination linear operator logarithmic derivative matrix mean value measurement motion norm obtained orthogonal orthonormal particular phase shift phenomena photon physical position potential V(r precise projector properties quantities quantization quantum number quantum system Quantum Theory radiation region representation represented resonance respectively satisfy scalar product scattering Schrodinger equation solution spherical square-integrable functions statistical distribution subspace trajectory uncertainty relations unitary vanishes vector velocity wave function Wave Mechanics wave packet wavelength Wronskian zero