Stability of quantum breathers
classification
❄️ cond-mat.stat-mech
nlin.PS
keywords
breatherlocalmodequantumbreatherscomparescorrelationscutoff-insensitive
read the original 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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