Physics – Condensed Matter
Scientific paper
1998-09-03
Phys. Rev. E 59 (1999) 2603-2613
Physics
Condensed Matter
20 pages, 1 figure
Scientific paper
10.1103/PhysRevE.59.2603
We generalize the method of Van Hove so as to deal with the case of non-ordinary statistical mechanics, that being phenomena with no time-scale separation. We show that in the case of ordinary statistical mechanics, even if the adoption of the Van Hove method imposes randomness upon Hamiltonian dynamics, the resulting statistical process is described using normal calculus techniques. On the other hand, in the case where there is no time-scale separation, this generalized version of Van Hove's method not only imposes randomness upon the microscopic dynamics, but it also transmits randomness to the macroscopic level. As a result, the correct description of macroscopic dynamics has to be expressed in terms of the fractional calculus.
Grigolini Paolo
Rocco Andrea
West Bruce J.
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