Results 81 to 90 of about 1,557,339 (268)

Classical and Quantum chaos in a spin-1 atomic Bose–Einstein condensate via Floquet driving

open access: yesResults in Physics, 2022
We investigate both the classical and quantum dynamics of a spin-1 Bose–Einstein condensate (BEC) system subject to periodic driving of quadratic Zeeman splitting. Without driving, the system is integrable.
Cheng-Jie Liu   +3 more
doaj   +1 more source

Entanglement dynamics in chaotic systems [PDF]

open access: yes, 2004
We study quantum chaos for systems with more than one degree of freedom, for which we present an analysis of the dynamics of entanglement. Our analysis explains the main features of entanglement dynamics and identifies entanglement-based signatures of ...
Ghose, Shohini, Sanders, Barry C.
core   +4 more sources

Sparse Sachdev-Ye-Kitaev model, quantum chaos, and gravity duals [PDF]

open access: yesPhysical Review D, 2020
We study a sparse Sachdev-Ye-Kitaev (SYK) model with $N$ Majoranas where only $\sim k N$ independent matrix elements are non-zero. We identify a minimum $k \gtrsim 1$ for quantum chaos to occur by a level statistics analysis. The spectral density in this
Antonio M. Garc'ia-Garc'ia   +3 more
semanticscholar   +1 more source

Multiple Twinning in Nacre and Aragonite

open access: yesAdvanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt   +7 more
wiley   +1 more source

About the Concept of Quantum Chaos

open access: yesEntropy, 2017
The research on quantum chaos finds its roots in the study of the spectrum of complex nuclei in the 1950s and the pioneering experiments in microwave billiards in the 1970s. Since then, a large number of new results was produced.
Ignacio S. Gomez   +2 more
doaj   +1 more source

Riemann zeta function and quantum chaos

open access: yes, 2007
A brief review of recent developments in the theory of the Riemann zeta function inspired by ideas and methods of quantum chaos is given.Comment: Lecture given at International Conference on Quantum Mechanics and Chaos, Osaka, September ...
Bogomolny, Eugene
core   +2 more sources

Quantum Chaos Border for Quantum Computing [PDF]

open access: yes, 1999
We study a generic model of quantum computer, composed of many qubits coupled by short-range interaction. Above a critical interqubit coupling strength, quantum chaos sets in, leading to quantum ergodicity of the computer eigenstates.
A. Steane   +28 more
core   +2 more sources

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

open access: yesAdvanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa   +19 more
wiley   +1 more source

Exponential Gain in Quantum Computing of Quantum Chaos and Localization

open access: yes, 2001
We present a quantum algorithm which simulates the quantum kicked rotator model exponentially faster than classical algorithms. This shows that important physical problems of quantum chaos, localization and Anderson transition can be modelled efficiently
A. Eckert   +28 more
core   +1 more source

Quantum chaos in topologically massive gravity [PDF]

open access: yesJournal of High Energy Physics, 2020
We study quantum chaos of rotating BTZ black holes in Topologically Massive gravity (TMG). We discuss the relationship between chaos parameters including Lyapunov exponents and butterfly velocities from shock wave calculations of out-of-time-order ...
Yan Liu, Avinash Raju
semanticscholar   +1 more source

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