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The Journal of Chemical Physics

Local and nonlocal approximation for a simple quantum system

Markus A. Palenberg, R. Silbey, Ch. Warns, P. Reineker

Published Mar 8, 2001• 25 citations
Publisher

Abstract

We apply two commonly used approximation schemes to the problem of a symmetric dimer with dynamic diagonal disorder. Since the exact analytical solution for this simple dissipative quantum system is known, we are in position to test the range of validity and the quality of the approximations and to derive guidelines for the application of the approximations to more complex systems.

DOI
10.1063/1.1330213

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Exact versus tight-binding models in longitudinally modulated PT\mathcal{PT}PT-symmetric coupled waveguides
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