arXiv subjects

Vincent Morin

Publications and source records attributed to Vincent Morin.

2 recordsLinked to original sources

arXiv2010

The dynamo bifurcation in rotating spherical shells

We investigate the nature of the dynamo bifurcation in a configuration applicable to the Earth's liquid outer core, i.e. in a rotating spherical shell with thermally driven motions. We show that the nature of the bifurcation, which can be either supercritical or subcritical or even take the form of isola (or detached lobes) strongly depends on the parameters. This dependence is described in a range of parameters numerically accessible (which unfortunately remains remote from geophysical application), and we show how the magnetic Prandtl number and the Ekman number control these transitions.

physics.geo-ph↗

arXiv2002

Fundamentals of a theory of elementary actions

Those articles (versions) explore a non conventional pregeometrical model encompassing quantics and geometrodynamics (a stochastic graph relational theory). Some key points are : 1) the use of simple boolean atom-like far subquantum entities connected with action links deriving from probabilistic laws (acteons). 2) the concept of structures as correlated nets of relations. 3) the relational definition of locus and processual definition of distances, with implied consequences on how the physical universe should be conceived in such a model. Added versions improve and extend the idea on mathematical grounds.

physics.gen-ph↗