dc.creator | Karakasidis, T. E. | en |
dc.creator | Andreadis, I. | en |
dc.date.accessioned | 2015-11-23T10:33:03Z | |
dc.date.available | 2015-11-23T10:33:03Z | |
dc.date.issued | 2002 | |
dc.identifier | 10.1142/s0218127402004383 | |
dc.identifier.issn | 0218-1274 | |
dc.identifier.uri | http://hdl.handle.net/11615/28971 | |
dc.description.abstract | In the present work we performed an analysis of time series of instantaneous temperature and pressure produced during constant temperature molecular dynamics. Simulations were applied to a nickel oxide grain boundary for a temperature range 0.15-0.80T(m), T-m being the melting point of the system. We performed a series of analysis for these time series including test for randomness, power spectrum, Hurst exponent and structure function test. Evidence of fractional Brownian motion was found. Pressure presents 1/f over the whole range of frequencies of the system while temperature presents a two-regime behavior: white noise at low frequencies and 1/f(alpha) at high frequencies with alpha increasing as a function of temperature. The origins of this behavior are discussed. | en |
dc.source | International Journal of Bifurcation and Chaos | en |
dc.source.uri | <Go to ISI>://WOS:000174775700009 | |
dc.subject | SELF-ORGANIZED CRITICALITY | en |
dc.subject | 1/F NOISE | en |
dc.subject | DIFFUSION | en |
dc.subject | SURFACE | en |
dc.subject | Mathematics, Interdisciplinary Applications | en |
dc.subject | Multidisciplinary Sciences | en |
dc.title | A fractional Brownian motion model for time series produced by constant temperature molecular dynamics simulations | en |
dc.type | journalArticle | en |