The spectrum of the quantum discrete nonlinear Schro¨dinger equation, or boson Hubbard Hamiltonian, 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. This fine structure is studied using degenerate perturbation theory.We also present a modification to this model, which increases the mobility of bound states.
Titolo: | Quantum signatures of breather-breather interactions |
Autori: | |
Data di pubblicazione: | 2004 |
Rivista: | |
Abstract: | The spectrum of the quantum discrete nonlinear Schro¨dinger equation, or boson Hubbard Hamiltonian, 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. This fine structure is studied using degenerate perturbation theory.We also present a modification to this model, which increases the mobility of bound states. |
Handle: | http://hdl.handle.net/11386/1063833 |
Appare nelle tipologie: | 1.1.2 Articolo su rivista con ISSN |
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