Quantum signatures of breather-breather interactions

Jerome Dorignac, J. C. Eilbeck, M. Salerno, Alwyn C. Scott

Research output: Contribution to journalArticle

Abstract

The spectrum of the quantum discrete nonlinear Schrödinger 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.
Original languageEnglish
Article number025504
JournalPhysical Review Letters
Volume93
Issue number2
DOIs
Publication statusPublished - 9 Jul 2004

Fingerprint Dive into the research topics of 'Quantum signatures of breather-breather interactions'. Together they form a unique fingerprint.

  • Cite this