Rigged Hilbert Space Approach to the Schrodinger Equation

Details Rigged Hilbert Space Approach to the Schrodinger Equation Rigged Hilbert Space Approach to the Schrodinger Equation

2001-10-29

arxiv.org/abs/quant-ph/0110165v1

J.Phys.A35:319-342,2002

Physics

Quantum Physics

27 RevTex pages

Scientific paper

10.1088/0305-4470/35/2/311

It is shown that the natural framework for the solutions of any Schrodinger equation whose spectrum has a continuous part is the Rigged Hilbert Space rather than just the Hilbert space. The difficulties of using only the Hilbert space to handle unbounded Schrodinger Hamiltonians whose spectrum has a continuous part are disclosed. Those difficulties are overcome by using an appropriate Rigged Hilbert Space (RHS). The RHS is able to associate an eigenket to each energy in the spectrum of the Hamiltonian, regardless of whether the energy belongs to the discrete or to the continuous part of the spectrum. The collection of eigenkets corresponding to both discrete and continuous spectra forms a basis system that can be used to expand any physical wave function. Thus the RHS treats discrete energies (discrete spectrum) and scattering energies (continuous spectrum) on the same footing.

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