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Stability of quantum breathers

L. S. Schulman·D. Tolkunov·E. Mihokova
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Abstract

Using two methods we show that a quantized discrete breather in a 1-D lattice is stable. One method uses path integrals and compares correlations for a (linear) local mode with those of the quantum breather. The other takes a local mode as the zeroth order system relative to which numerical, cutoff-insensitive diagonalization of the Hamiltonian is performed.

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L. S. Schulman, D. Tolkunov, E. Mihokova. 2006-02-14. Stability of quantum breathers. https://doi.org/10.1103/physrevlett.96.065501

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