Superfluidity in Bose-Hubbard circuits

Geva Arwas, Doron Cohen

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A semiclassical theory is provided for the metastability regime diagram of atomtronic superfluid circuits. Such circuits typically exhibit high-dimensional chaos, and nonlinear resonances that couple the Bogoliubov excitations manifest. Contrary to the expectation, these resonances do not originate from the familiar Beliaev and Landau damping terms. Rather, they are described by a variant of the Cherry Hamiltonian of celestial mechanics. Consequently, we study the induced decay process and its dependence on the number of sites and condensed particles.

Original languageEnglish
Article number054505
JournalPhysical Review B
Volume95
Issue number5
DOIs
StatePublished - 13 Feb 2017

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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