Results 41 to 50 of about 1,557,339 (268)
Complexity from the reduced density matrix: a new diagnostic for chaos
Journal of High Energy Physics, 2021 We investigate circuit complexity to characterize chaos in multiparticle quantum systems. In the process, we take a stride to analyze open quantum systems by using complexity.
Arpan Bhattacharyya +2 more
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Spectral Filtering Induced by Non-Hermitian Evolution with Balanced Gain and Loss: Enhancing Quantum Chaos. [PDF]
Physical Review Letters, 2021 The dynamical signatures of quantum chaos in an isolated system are captured by the spectral form factor, which exhibits as a function of time a dip, a ramp, and a plateau, with the ramp being governed by the correlations in the level spacing ...
Julien Cornelius +4 more
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Symmetry Classification and Universality in Non-Hermitian Many-Body Quantum Chaos by the Sachdev-Ye-Kitaev Model [PDF]
Physical Review X, 2021 Spectral correlations are a powerful tool to study the dynamics of quantum many-body systems. For Hermitian Hamiltonians, quantum chaotic motion is related to random matrix theory spectral correlations.
Antonio M. Garc'ia-Garc'ia +2 more
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Quantum irreversibility and chaos [PDF]
Physical Review Letters, 1991 Abstract Herein we establish a relation between quantum irreversibility and the chaotic semi-classical solutions for a spin-boson Hamiltonian system. We obtain quantum averages by numerically integrating the appropriate Liouville-Von Neumann equations of motion and find these averages to be less erratic than the corresponding chaotic ...
West, Bruce J. +3 more
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On systems of maximal quantum chaos [PDF]
Journal of High Energy Physics, 2021 A remarkable feature of chaos in many-body quantum systems is the existence of a bound on the quantum Lyapunov exponent. An important question is to understand what is special about maximally chaotic systems which saturate this bound.
Mike Blake, Hong Liu
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Many-body quantum chaos in stroboscopically-driven cold atoms [PDF]
Communications Physics, 2022 In quantum chaotic systems, the spectral form factor (SFF), defined as the Fourier transform of two-level spectral correlation function, is known to follow random matrix theory (RMT), namely a ‘ramp’ followed by a ‘plateau’ in late times.
Ceren B. Dağ +3 more
semanticscholar +1 more source
Physics Open, 2019 Previous work in the field of relativistic quantum chaos has revealed initial evidence that the manifestations of classical chaos in relativistic quantum systems tend to be weakened as compared with those in nonrelativistic quantum systems. To place this
Chen-Di Han +3 more
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Emergent Quantum State Designs from Individual Many-Body Wave Functions
PRX Quantum, 2023 Quantum chaos in many-body systems provides a bridge between statistical and quantum physics with strong predictive power. This framework is valuable for analyzing properties of complex quantum systems such as energy spectra and the dynamics of ...
Jordan S. Cotler +7 more
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Onset of many-body quantum chaos due to breaking integrability [PDF]
Physical review B, 2021 Integrable quantum systems of finite size are generically robust against weak enough integrability-breaking perturbations, but become quantum chaotic and thermalizing if the integrability-breaking is strong enough.
V. B. Bulchandani +2 more
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Many-Body Quantum Chaos and Emergence of Ginibre Ensemble. [PDF]
Physical Review Letters, 2022 We show that non-Hermitian Ginibre random matrix behaviors emerge in spatially extended many-body quantum chaotic systems in the space direction, just as Hermitian random matrix behaviors emerge in chaotic systems in the time direction.
S. Shivam +3 more
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