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Your search keyword '"Shi-Xian Qu"' showing total 10 results
Start Over Author "Shi-Xian Qu" Journal chinese physics letters
10 results on '"Shi-Xian Qu"'

1. Escaping from Strange Sets in Discontinuous Circle Map

Author

Da-Ren He, Jian-gang Sun, Shi-xian Qu, Shan Guan, Xi-ping Ji, and Bing-Hong Wang

Subjects
Nonlinear Sciences::Chaotic Dynamics, Physics, Discontinuity (linguistics), Scaling law, Mathematics::Dynamical Systems, Classical mechanics, Mathematical analysis, Attractor, Life time, General Physics and Astronomy, Leakage (electronics)
Abstract

The leakage of iterations from chaotic attractor near crisis due to dynamical interaction between discontinuity and noninvertibility has been studied. The scaling law of the mean life time is derived analytically. The numerical result shows very good agreement.

Published
1996

2. Scaling Properties of the Period-Adding Sequences in a Multiple Devil's Staircase

Author

Shunguang Wu, Cai-yun Wu, Da-Ren He, and Shi-Xian Qu

Subjects
Physics, Sequence, Period (periodic table), Position (vector), General Physics and Astronomy, Statistical physics, Plateau (mathematics), Scaling
Abstract

In this letter the scaling properties of the period-adding sequences in a so-called "multiple Devil's staircase" are reported. It is certified both analytically and numerically that the width of the i-th phase-locked plateau in a sequence scales as ln|Δe(i)| ∝ i, and the position of the plateau scales as ln|e∞ - ei| ∝ i. These properties are qualitatively different from those of the period-adding sequences in conventional Devil's staircases.

Published
1998

3. Time-Delay Enhanced Coherence Resonance in a Discrete Neuron with Noises

Author

Ke-Li Yang, Can-Jun Wang, and Shi-Xian Qu

Subjects
Physics, Time delays, Computer simulation, business.industry, Gaussian, General Physics and Astronomy, Noise intensity, Intensity (physics), symbols.namesake, Optics, Colors of noise, Coherence resonance, symbols, business
Abstract

Coherence resonance in a discrete excitable neuronal model with noises and time delays is investigated. The effects of the time delays on coherence resonance are revealed in two cases: Gaussian white and Gaussian color noises, respectively. The coefficient of variation of interspike intervals is calculated by numerical simulation. The results show that the coherence resonance is enhanced with the time delay increasing in the weak noises intensity cases, while there is no effect in the large noise intensity. Moreover, the coherence resonance can be held back by the self-correlation time, when the system is driven by a color noise.

Published
2014

8. Time-Delay Enhanced Coherence Resonance in a Discrete Neuron with Noises.

Author

Can-Jun Wang, Ke-Li Yang, and Shi-Xian Qu

Subjects
STOCHASTIC resonance, TIME delay systems, RESONANCE, RANDOM noise theory, ADDITIVE white Gaussian noise channels
Abstract

Coherence resonance in a discrete excitable neuronal model with noises and time delays is investigated. The effects of the time delays on coherence resonance are revealed in two cases: Gaussian white and Gaussian color noises, respectively. The coefficient of variation of interspike intervals is calculated by numerical simulation. The results show that the coherence resonance is enhanced with the time delay increasing in the weak noises intensity cases, while there is no effect in the large noise intensity. Moreover, the coherence resonance can be held back by the self-correlation time, when the system is driven by a color noise. [ABSTRACT FROM AUTHOR]

Published
2014
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9. Majorization Relation in Quantum Critical Systems.

Author

Lin-Ping Huai, Yu-Ran Zhang, Si-Yuan Liu, Wen-Li Yang, Shi-Xian Qu, and Heng Fan

Subjects
QUANTUM information science, GROUND state (Quantum mechanics), QUANTUM phase transitions, ISING model, QUANTUM entanglement
Abstract

The most basic local conversion is local operations and classical communications (LOCC), which is also the most natural restriction in quantum information processing. We investigate the conversions between the ground states in quantum critical systems via LOCC and propose a novel method to reveal the different convertibilities via majorization relation when a quantum phase transition occurs. The ground-state local convertibility in the one-dimensional transverse field Ising model is studied. It is shown that the LOCC convertibility changes nearly at the phase transition point. The relation between the order of quantum phase transitions and the LOCC convertibility is discussed. Our results are compared with the corresponding results by using the Rényi entropy and the LOCC convertibility with assisted entanglement. [ABSTRACT FROM AUTHOR]

Published
2014
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