Probing quantum chaos in multipartite systems

Probing quantum chaos in multipartite systems

Blog Article

Understanding the emergence of quantum chaos in multipartite fr5299 systems is challenging in the presence of interactions.We show that the contribution of the subsystems to the global behavior can be revealed by probing the full counting statistics of the local, total, and interaction energies.As in the spectral form factor, signatures of quantum chaos in the time domain dictate a dip-ramp-plateau structure in the characteristic function, i.e.

, the Fourier transform of the eigenvalue distribution.With this approach, we explore the fate of chaos in interacting subsystems that are locally maximally chaotic.Global quantum chaos can be suppressed at strong coupling, as illustrated with coupled copies of random-matrix Hamiltonians and of the Sachdev-Ye-Kitaev model.Our method is amenable to experimental green microsuede fabric implementation using single-qubit interferometry.