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  • Letter
  • Open Access

Propagation of two-particle correlations across the chaotic phase for interacting bosons

Óscar Dueñas1,2, David Peña1, and Alberto Rodríguez1,2,*

  • *Contact author: argon@usal.es
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Phys. Rev. Research 7, L012031 – Published 10 February, 2025

DOI: https://doi.org/10.1103/PhysRevResearch.7.L012031

Abstract

We analyze the propagation of experimentally relevant two-particle correlations for one-dimensional interacting bosons, and give evidence that many-body chaos induces the emergence of an effective diffusive regime for the fully coherent correlation dynamics, characterized by an interaction dependent diffusion coefficient, which we estimate. This result supports very recent experimental observations, and paves the way toward an efficient description of the dynamical behavior of nonintegrable complex many-body systems. Furthermore, we show that the dynamical features within experimentally accessible time scales of a conveniently defined two-particle correlation transport distance provide a direct and unambiguous characterization of many-body quantum chaos in perfect agreement with its spectral identification.

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Phys. Rev. Research 7, L012031– Published 10 February, 2025
  • Received 11 July 2024
  • Accepted 21 January 2025
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