Quantum signatures of breather-breather interactions

Details Quantum signatures of breather-breather interactions Quantum signatures of breather-breather interactions

2003-12-16

arxiv.org/abs/quant-ph/0312143v1

Phys Rev Letts. 93, 025504 (2004)

Physics

Quantum Physics

4 pages, 4 figs

Scientific paper

10.1103/PhysRevLett.93.025504

The spectrum of the Quantum Discrete Nonlinear Schr\"odinger equation on a
periodic 1D lattice shows some interesting detailed band structure which may be
interpreted as the quantum signature of a two-breather interaction in the
classical case. We show that this fine structure can be interpreted using
degenerate perturbation theory.

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