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Towards an universal classification of scale invariant processes
Authors:B. Dubrulle  F.-M. Bréon  F. Graner  A. Pocheau
Affiliation:CNRS (URA 2052), CEA/DSM/DAPNIA/Service d'Astrophysique, CE Saclay, 91191 Gif-sur-Yvette, France, FR
CEA/DSM/LMCE, CE Saclay, 91191 Gif-sur-Yvette, France, FR
CNRS (UMR 5588), Laboratoire de Spectrométrie Physique, Université Grenoble I, BP 87, 38402 Saint-Martin-d'Hères, France, FR
IRPHE (UMR 6594 CNRS), Universités Aix-Marseille I & II, Centre de Saint-Jér?me, S.252, 13397 Marseille, France, FR
Abstract:
We consider fields which take random values over several decades. Starting from physical examples, we postulate that scale is not an absolute quantity. We then establish the equivalence between two existing approaches based on scale symmetry arguments as general as possible. This yields a classification of log-infinitely divisible laws, possibly universal. The physical significance of the parameters entering in the classification is discussed. Received: 7 November 1997 / Received in final form: 26 March 1998 / Accepted: 30 March 1998
Keywords:PACS. 11.30.-j Symmetry and conservation laws
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