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An extended formulation of out-of-time-ordered correlators (OTOCs), which quantify noncommutative operator growth and information scrambling in quantum many-body systems, is developed for turbulence dynamics as a representative of…

等离子体物理 · 物理学 2026-02-26 Motoki Nakata

Classically integrable approximants are here constructed for a family of predominantly chaotic periodic systems by means of the Baker-Hausdorff-Campbell formula. We compare the evolving wave density for the corresponding exact quantum…

混沌动力学 · 物理学 2020-05-26 Gabriel M. Lando , Alfredo M. Ozorio de Almeida

The spatiotemporal chaos in the system described by a one-dimensional nonlinear drift-wave equation is controlled by directly adding a periodic force with appropriately chosen frequencies. By dividing the solution of the system into a…

chao-dyn · 物理学 2009-10-31 Shunguang Wu , Kaifen He , Zuqia Huang

The symmetry of chaotic systems plays a pivotal role in determining the universality class of spectral statistics and dynamical behaviors, which can be described within the framework of random matrix theory. Understanding the influence of…

统计力学 · 物理学 2024-10-08 Fuxing Chen , Ping Fang

In the large-$N$, classical limit, the Bose-Hubbard dimer undergoes a transition to chaos when its tunnelling rate is modulated in time. We use exact and approximate numerical simulations to determine the features of the dynamically…

量子物理 · 物理学 2019-07-31 R. A. Kidd , M. K. Olsen , J. F. Corney

An effective characterization of chaotic conservative Hamiltonian systems in terms of the curvature associated with a Riemannian metric tensor derived from the structure of the Hamiltonian has been extended to a wide class of potential…

混沌动力学 · 物理学 2015-05-18 Yossi Ben Zion , Lawrence Horwitz

Complex dynamical systems may exhibit multiple steady states, including time-periodic limit cycles, where the final trajectory depends on initial conditions. With tuning of parameters, limit cycles can proliferate or merge at an exceptional…

统计力学 · 物理学 2024-12-03 Sergei Shmakov , Peter B. Littlewood

Here we define natural chaotic systems, like the earths weather and climate system, as chaotic systems which are open to the world so have constantly changing boundary conditions, and measurements of their states are subject to errors. In…

混沌动力学 · 物理学 2024-09-24 Michael LuValle

Chaos is an important characterization of classical dynamical systems. How is chaos linked to the long-time dynamics of collective modes across phases and phase transitions? We address this by studying chaos across Ising and…

统计力学 · 物理学 2021-11-10 Sibaram Ruidas , Sumilan Banerjee

In a variety of studies of dynamical systems, the edge of order and chaos has been singled out as a region of complexity. It was suggested by Wolfram, on the basis of qualitative behaviour of cellular automata, that the computational basis…

chao-dyn · 物理学 2009-10-28 Porus Lakdawala

We investigate the effect of repeated measurement for quantum dynamics of the suppressed systems which classical counterparts exhibit chaos. The essential feature of such systems is the quantum localization phenomena strongly limiting…

量子物理 · 物理学 2008-02-03 B. Kaulakys

We propose an anharmonic oscillator driven by two periodic forces of different frequencies as a new time-dependent model for investigating quantum dissipative chaos. Our analysis is done in the frame of statistical ensemble of quantum…

量子物理 · 物理学 2009-11-07 H. H. Adamyan , S. B. Manvelyan , G. Yu. Kryuchkyan

We study the dynamics of an intriguing crossover from a chaotic to a power law state as a function of strain rate within the context of a recently introduced model which reproduces the crossover. While the chaotic regime has a small set of…

材料科学 · 物理学 2009-11-10 M. S. Bharathi , G. Ananthakrishna

We consider the Kirchhoff equation on tori of any dimension and we construct solutions whose Sobolev norms oscillates in a chaotic way on certain long time scales. The chaoticity is encoded in the time between oscillations of the norm,…

偏微分方程分析 · 数学 2023-03-02 Pietro Baldi , Filippo Giuliani , Marcel Guardia , Emanuele Haus

Out-of-time-ordered-correlators (OTOCs) have been suggested as a means to diagnose chaotic behavior in quantum mechanical systems. Recently, it was found that OTOCs display exponential growth for the inverted quantum harmonic oscillator,…

高能物理 - 理论 · 物理学 2024-08-26 Paul Romatschke

The identification of the governing equations of chaotic dynamical systems from data has recently emerged as a hot topic. While the seminal work by Brunton et al. reported proof-of-concepts for idealized observation setting for…

机器学习 · 计算机科学 2019-03-26 Duong Nguyen , Said Ouala , Lucas Drumetz , Ronan Fablet

Out-of-time-order correlators (OTOCs) have proven to be a useful tool for studying thermalisation in quantum systems. In particular, the exponential growth of OTOCS, or scrambling, is sometimes taken as an indicator of chaos in quantum…

量子物理 · 物理学 2021-03-09 R. A. Kidd , A. Safavi-Naini , J. F. Corney

The non-integrability of quantum systems, often associated with chaotic behavior, is a concept typically applied to cases with a high-dimensional Hilbert space Among different indicators signaling this behavior, the study of the long-time…

A great number of physical processes are described within the context of Hamiltonian scattering. Previous studies have rather been focused on trajectories starting outside invariant structures, since the ones starting inside are expected to…

混沌动力学 · 物理学 2010-08-31 Christian S. Rodrigues , Alessandro P. S. de Moura , Celso Grebogi

In many complex systems, large events are believed to follow power-law, scale-free probability distributions, so that the extreme, catastrophic events are unpredictable. Here, we study coupled chaotic oscillators that display extreme…