Mathematical Physics
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The Discrete Self-Trapping Equation
The Discrete Self-Trapping Equation The equation where is a complex n-vector, and M is a real symmetric matrix, is known as the Discrete Self-Trapping (DST) Equation. See J. C. Eilbeck, P. S. Lomdahl, and A. C. Scott, Physica D, 16, 318-338, 1985, for details. In the cases where M is tri-diagonal with constant coefficients, this reduces to a discrete form of the Nonlinear Schr dinger (DNLS) ...
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Calculus of Variations@