Trapping in quantum chains

J. C. Eilbeck, F. Palmero

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


A quantum breather on a translationally invariant one-dimensional anharmonic lattice is an extended Bloch state with two or more particles in a strongly correlated state. In this Letter we study a periodic lattice containing bosons described by the quantum discrete nonlinear Schrödinger equation (QDNLS), a quantum version of the discrete nonlinear Schrödinger equation, also known as the boson Hubbard model. We discuss several effects that break the lattice symmetry and lead to spatial localization of the breather. © 2004 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)201-208
Number of pages8
JournalPhysics Letters A
Issue number3-4
Publication statusPublished - 18 Oct 2004


  • Anharmonic quantum lattices
  • Quantum breathers
  • Quantum lattice solitons


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