Chaos-assisted many-body tunnelling

Urbashi Satpathi, Sayak Ray, Amichay Vardi

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We study the interplay of chaos and tunneling between two weakly coupled Bose-Josephson junctions. The classical phase space of the composite system has a mixed structure including quasi-integrable self-trapping islands for particles and excitations, separated by a chaotic sea. We show that the many-body dynamical tunneling gap between macroscopic Schrödinger cat states supported by these islands is chaos-enhanced. The many-body tunneling rate fluctuates over several orders of magnitude with small variations of the system parameters or the particle number.

Original languageEnglish
Article numberL042204
JournalPhysical Review E
Issue number4
StatePublished - 1 Oct 2022

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability


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