Abstract
The discrete variable representation (DVR) on Gaussian quadrature points for orthogonal polynomials is defined. It is shown that the Hamiltonian for multidimensional systems is easy to evaluate and sparse in the DVR. Methods of solution of the time dependent Schrödinger equation in the DVR are presented. A highly efficient method of solution of the time independent Schrödinger equation for many eigenvalues and eigenvectors is presented which is based (in the DVR) on sequential adiabatic-sudden partitioning diagonalization, truncation, and recoupling of lower dimensional solutions. Brief summaries are presented of the application of these techniques to predissociation of NaI, vibrational states of H3+, and the thermal rate constant of the H+H2 reaction.
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Light, J.C., Whitnell, R.M., Park, T.J., Choi, S.E. (1989). Quantum Dynamics of Small Systems using Discrete Variable Representations. In: Laganà , A. (eds) Supercomputer Algorithms for Reactivity, Dynamics and Kinetics of Small Molecules. NATO ASI Series, vol 277. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0945-8_11
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DOI: https://doi.org/10.1007/978-94-009-0945-8_11
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