12 research outputs found
Hamiltonian models for the Madelung fluid and generalized Langevin equations
SIGLEAvailable from Bielefeld Univ. (DE). Forschungszentrum Bielefeld-Bochum-Stochastik (BiBoS) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman
Hyperbolic diffusion in chaotic systems
We consider a deterministic process described by a discrete one-dimensional chaotic map and study its diffusive-like properties.
Starting with the corresponding Frobenius-Perron equation we derive an approximate evolution equation for the probability distribution which is a partial
differential equation of a hyperbolic type. Consequently, the process is correlated, non-Markovian, non-Gaussian and the information propagates with a
finite velocity. This is in clear contrast to conventional diffusion processes described by a standard parabolic diffusion equation with an infinite velocity of information propagation. Our approach allows for a more complete characterisation of diffusion
dynamics of deterministic systems