Mainz 2026 – scientific programme
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A: Fachverband Atomphysik
A 5: Ultracold Matter II – Bosons (joint session Q/A)
A 5.4: Talk
Monday, March 2, 2026, 17:45–18:00, P 2
Dynamic behaviour of density correlations across the chaotic phase for interacting bosons — •Óscar Dueñas Sánchez1,2 and Alberto Rodríguez1,2 — 1Departamento de Física Fundamental, Universidad de Salamanca, E-37008 Salamanca, Spain — 2Instituto Universitario de Física Fundamental y Matemáticas (IUFFyM), Universidad de Salamanca, E-37008 Salamanca, Spain
We study the dynamical manifestation of the chaotic phase in the time-dependent propagation of experimentally relevant two-particle correlations for one-dimensional interacting bosons. In particular, we show that the onset of chaos reshapes the correlation profiles, alters the propagation front and velocity, and modifies both the decay of the first correlation maximum and the long-time saturation values. These observables provide a detailed characterization of correlation transport beyond standard light-cone pictures. We further relate these findings to the emergence of a diffusive regime in the correlation propagation previously observed in Ref. [1], quantified through a suitably defined correlation transport distance.
[1] O. Dueñas, D. Peña and A. Rodríguez, Phys. Rev. Research 7, L012031 (2025)
Keywords: Bose-Hubbard model; Quantum chaos; Many-body dynamics