Results 41 to 50 of about 8,059 (236)
Chaos and high temperature pure state thermalization
Journal of High Energy Physics, 2019 Classical arguments for thermalization of isolated systems do not apply in a straightforward way to the quantum case. Recently, there has been interest in diagnostics of quantum chaos in many-body systems.
Yuri D. Lensky, Xiao-Liang Qi
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Probing quantum chaos in multipartite systems
Physical Review Research, 2022 Understanding the emergence of quantum chaos in multipartite 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 ...
Zan Cao, Zhenyu Xu, Adolfo del Campo
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Communications in Mathematical Sciences, 2018 We study the notion of quantum Kac's chaos which was implicitly introduced by Spohn and explicitly formulated by Gottlieb. We prove the analogue of a result of Sznitman which gives the equivalence of Kac's chaos to 2-chaoticity and to convergence of empirical measures.
Androulakis, George, Musulin, Rade
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Chaos and quantum chaos in cosmological models [PDF]
Chaos, Solitons & Fractals, 1995 Spatially homogeneous cosmological models reduce to Hamiltonian systems in a low dimensional Minkowskian space moving on the total energy shell $H=0$. Close to the initial singularity some models (those of Bianchi type VIII and IX) can be reduced further, in a certain approximation, to a non-compact triangular billiard on a 2-dimensional space of ...
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Quantum Particle Swarm Optimization Extraction Algorithm Based on Quantum Chaos Encryption
Complexity, 2021 Considering the highly complex structure of quantum chaos and the nonstationary characteristics of speech signals, this paper proposes a quantum chaotic encryption and quantum particle swarm extraction method based on an underdetermined model.
Chao Li +3 more
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On the Classical Limit of Quantum Mechanics [PDF]
, 2008 Contrary to the widespread belief, the problem of the emergence of classical mechanics from quantum mechanics is still open. In spite of many results on the ¯h → 0 asymptotics, it is not yet clear how to explain within standard quantum mechanics the ...
Allori, Valia, Zanghi, Nino
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Avoiding quantum chaos in quantum computation [PDF]
Physical Review E, 2001 We study a one-dimensional chain of nuclear $1/2-$spins in an external time-dependent magnetic field. This model is considered as a possible candidate for experimental realization of quantum computation. According to the general theory of interacting particles, one of the most dangerous effects is quantum chaos which can destroy the stability of ...
Berman, G. P. +3 more
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A new approach to the treatment of separatrix chaos [PDF]
, 2012 We review an approach to separatrix chaos that has allowed us to solve some significant problems by: (i) finding analytically the maximum width of the chaotic layer, a problem that lay unsolved for 40 years, and showing that the maximum may be much ...
Khovanov, Igor A. +13 more
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Generalized spectral form factors and the statistics of heavy operators
Journal of High Energy Physics, 2022 The spectral form factor is a powerful probe of quantum chaos that diagnoses the statistics of energy levels, but is blind to other features of a theory such as matrix elements of operators or OPE coefficients in conformal field theories.
Alexandre Belin +3 more
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Pracì Mìžnarodnogo Geometričnogo Centru, 2015 Work is devoted to the development of the theoretical foundations of the universal new relativistic chaos-geometric and quantum-dynamic approach that consistently includes a number of new relativistic quantum models and a number of new or improved ...
Александр Васильевич Глушков +3 more
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