par de Haan, Michel 
;George, Claude
Référence International journal of quantum chemistry, 98, 2, page (112-117)
Publication Publié, 2004-05
;George, Claude Référence International journal of quantum chemistry, 98, 2, page (112-117)
Publication Publié, 2004-05
Article révisé par les pairs
| Résumé : | A challenging problem facing physicists is the compatibility of irreversibility, as expressed by the second law of thermodynamics, with ordinary quantum mechanics. We present a solution through an extension of the latter. The presence of self-energy processes (already found in quantum electrodynamics) is fully exploited to get an extension of a reversible formalism. They enable the widening of the dynamics by the introduction of specific auxiliary variables, leading to the recognition of such processes. A projection technique modeled on the one introduced long ago by the Brussels group defines a subdynamics that is shown to contain entirely the starting formulation (it corresponds to a restricted class of initial conditions, namely, the reversible one). A new kinetic description is obtained in which, for example, collision processes for privileged components arise from the original interaction. A very simple model and its generalizations are considered. © 2004 Wiley Periodicals, Inc. |
