Stability of quantum breathers

Details Stability of quantum breathers Stability of quantum breathers

2006-01-10

arxiv.org/abs/cond-mat/0601209v2

Phys. Rev. Lett. 96, Article 065501 (2006)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.96.065501

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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