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Stretched Exponential Relaxation in Disordered Complex Systems: Fractal Time Random Walk Model |
Ekrem Aydiner |
Department of Physics, Dokuz Eylul University, Tr-35160 Izmir, Turkey |
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Cite this article: |
Ekrem Aydiner 2007 Chin. Phys. Lett. 24 1486-1490 |
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Abstract We have analytically derived the relaxation function for one-dimensional disordered complex systems in terms of autocorrelation function of fractal time random walk by using operator formalism. We have shown that the relaxation function has stretched exponential, i.e. the Kohlrausch--Williams--Watts character for a fractal time random walk process.
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Keywords:
05.40.-a
02.50.-r
02.30.-f
76.20.+q
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Received: 15 January 2007
Published: 17 May 2007
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PACS: |
05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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02.50.-r
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(Probability theory, stochastic processes, and statistics)
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02.30.-f
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(Function theory, analysis)
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76.20.+q
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(General theory of resonances and relaxations)
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