Contextuality and Chaos
- URL: http://arxiv.org/abs/2503.13886v1
- Date: Tue, 18 Mar 2025 04:32:09 GMT
- Title: Contextuality and Chaos
- Authors: Sanchit Srivastava, Shohini Ghose,
- Abstract summary: We show that contextuality, a quantum property that defies classical explanations, can serve as a signature of chaos.<n>For a spin system undergoing chaotic dynamics, we demonstrate that violations of Bell-type inequality can effectively differentiate regular and chaotic regions.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Classical chaos is marked by an extreme sensitivity to initial conditions, where infinitesimally close trajectories separate exponentially over time. In quantum mechanics, however, unitary evolution and the uncertainty principle preclude such behavior, necessitating alternative approaches to identifying chaos in quantum systems. One must therefore seek quantum features that can indicate the emergence of chaos in the classical limit. Here, we show that contextuality, a quantum property that defies classical explanations, can serve as a signature of chaos. For a spin system undergoing chaotic dynamics, we demonstrate that violations of Bell-type inequality can effectively differentiate regular and chaotic regions of the phase space, suggesting that the nonclassicality of the system underpins signatures of chaos.
Related papers
- A Classical Analogue of Entanglement for a Kicked Top [0.0]
It is widely believed that quantum mechanics cannot exhibit chaos, since unitarity of time evolution ensures that distances between quantum states are preserved.<n>A parallel argument can be constructed in classical mechanics that would seem to deny the existence of classical chaos too.
arXiv Detail & Related papers (2024-11-13T18:38:12Z) - Signatures of quantum phases in a dissipative system [13.23575512928342]
Lindbladian formalism has been all-pervasive to interpret non-equilibrium steady states of quantum many-body systems.
We study the fate of free fermionic and superconducting phases in a dissipative one-dimensional Kitaev model.
arXiv Detail & Related papers (2023-12-28T17:53:26Z) - Probing quantum chaos with the entropy of decoherent histories [0.0]
Quantum chaos, a phenomenon that began to be studied in the last century, still does not have a rigorous understanding.
We propose the quantum chaos definition in the manner similar to the classical one using decoherent histories as a quantum analogue of trajectories.
We show that for such a model, the production of entropy of decoherent histories is radically different in integrable and chaotic regimes.
arXiv Detail & Related papers (2023-07-17T21:57:05Z) - Steady-state quantum chaos in open quantum systems [0.0]
We introduce the notion of steady-state quantum chaos as a general phenomenon in open quantum many-body systems.
Chaos and integrability in the steady state of an open quantum system are instead uniquely determined by the spectral structure of the time evolution generator.
We study steady-state chaos in the driven-dissipative Bose-Hubbard model, a paradigmatic example of out-of-equilibrium bosonic system without particle number conservation.
arXiv Detail & Related papers (2023-05-24T18:00:22Z) - Quantum Instability [30.674987397533997]
We show how a time-independent, finite-dimensional quantum system can give rise to a linear instability corresponding to that in the classical system.
An unstable quantum system has a richer spectrum and a much longer recurrence time than a stable quantum system.
arXiv Detail & Related papers (2022-08-05T19:53:46Z) - Quantum dynamics corresponding to chaotic BKL scenario [62.997667081978825]
Quantization smears the gravitational singularity avoiding its localization in the configuration space.
Results suggest that the generic singularity of general relativity can be avoided at quantum level.
arXiv Detail & Related papers (2022-04-24T13:32:45Z) - Unification of Random Dynamical Decoupling and the Quantum Zeno Effect [68.8204255655161]
We show that the system dynamics under random dynamical decoupling converges to a unitary with a decoupling error that characteristically depends on the convergence speed of the Zeno limit.
This reveals a unification of the random dynamical decoupling and the quantum Zeno effect.
arXiv Detail & Related papers (2021-12-08T11:41:38Z) - Quantum Causal Inference in the Presence of Hidden Common Causes: an
Entropic Approach [34.77250498401055]
We put forth a new theoretical framework for merging quantum information science and causal inference by exploiting entropic principles.
We apply our proposed framework to an experimentally relevant scenario of identifying message senders on quantum noisy links.
This approach can lay the foundations of identifying originators of malicious activity on future multi-node quantum networks.
arXiv Detail & Related papers (2021-04-24T22:45:50Z) - Sensing quantum chaos through the non-unitary geometric phase [62.997667081978825]
We propose a decoherent mechanism for sensing quantum chaos.
The chaotic nature of a many-body quantum system is sensed by studying the implications that the system produces in the long-time dynamics of a probe coupled to it.
arXiv Detail & Related papers (2021-04-13T17:24:08Z) - On systems of maximal quantum chaos [8.020530603813416]
A remarkable feature of chaos in many-body quantum systems is the existence of a bound on the quantum Lyapunov exponent.
Here we provide further evidence for the hydrodynamic' origin of chaos in such systems, and discuss hallmarks of maximally chaotic systems.
arXiv Detail & Related papers (2021-02-22T19:00:09Z) - Quantum signatures of chaos in a cavity-QED-based stimulated Raman
adiabatic passage [0.0]
A nonlinear stimulated Raman adiabatic passage (STIRAP) is a fascinating physical process that dynamically explores chaotic and non-chaotic phases.
With the aim of extracting quantum signatures of a classically chaotic system, it is shown that an out-of-time-ordered correlator captures chaotic/non-chaotic features of the system.
A dynamics through the chaotic phase is associated with spreading of many-body quantum state and an irreversible increase in the number of participating adiabatic eigenstates.
arXiv Detail & Related papers (2020-10-29T13:00:49Z) - Emergence of classical behavior in the early universe [68.8204255655161]
Three notions are often assumed to be essentially equivalent, representing different facets of the same phenomenon.
We analyze them in general Friedmann-Lemaitre- Robertson-Walker space-times through the lens of geometric structures on the classical phase space.
The analysis shows that: (i) inflation does not play an essential role; classical behavior can emerge much more generally; (ii) the three notions are conceptually distinct; classicality can emerge in one sense but not in another.
arXiv Detail & Related papers (2020-04-22T16:38:25Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.