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arXiv 2002-03-21 2 views

Long-range correlated stationary Markovian processes

Lillo, Fabrizio · Micciche', Salvatore · Mantegna, Rosario N.

Original · EN

We introduce a new class of stochastic processes which are stationary, Markovian and characterized by an infinite range of time-scales. By transforming the Fokker-Planck equation of the process into a Schrodinger equation with an appropriate quantum potential we determine the asymptotic behavior of the autocorrelation function of the process in an analytical way. We find the conditions needed to observe a stationary long-range correlated Markovian process. In the presence of long-range correlation, for selected values of the control parameters, the process has a 1/f-like spectral density for low frequency values.

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