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7 papers · 1 filter
Equilibrium spin current through the tunnelling junctions
J. Wang, K. S. Chan
We study equilibrium pure spin current through tunnelling junctions at zero bias. The two leads of the junctions connected via a thin insulator barrier, can be either a ferromagnet…
The Bekenstein-Hawking Entropy of Higher-Dimensional Rotating Black Holes
Zheng Ze Ma
A black hole can be regarded as a thermodynamic system described by a grand canonical ensemble. In this paper, we study the Bekenstein-Hawking entropy of higher-dimensional rotatin…
Euler numbers of four-dimensional rotating black holes with the Euclidean signature
Zheng Ze Ma
For a black hole's spacetime manifold in the Euclidean signature, its metric is positive definite and therefore a Riemannian manifold. It can be regarded as a gravitational instant…
Comment on novel public key encryption technique based on multiple chaotic systems
K. wang, W. J. Pei, Z. L. Hua +1
Recently, a novel public key edcryption technique based on multiple chaotic systems has been proposed. The scheme employs m-chaotic systmes and a set of linear functions for key ex…
Secure Communication Scheme Based on Asymptotic Model of Deterministic Randomness
Jiantao Zhou, Wenjiang Pei, Kai Wang +2
We propose a new cryptosystem by combing the Lissajous map, which is the asymptotic model of deterministic randomness, with the one-way coupled map lattice (OCML) system. The key s…
Fidelity of a Bose-Einstein Condensate
Jie Liu, Wenge Wang, Chuanwei Zhang +2
We investigate fidelity, the Loschmidt echo, for a Bose-Einstein Condensate. It is found that the fidelity decays with time in various ways (exponential, Gaussian, and power-law),…