Showing papers in "Helvetica Physica Acta in 1989"

Stochastic quantum dynamics and relativity

Abstract: Our aim is to unify the Schroedinger dynamics and the projection postulate. We first prove that the Schroedinger evolution is the only quantum evolution that is deterministic and compatible with relativity. Next we present a non deterministic generalization of the Schroedinger equation compatible with relativity. This time continuous pure state valued stochastic process covers the whole class of quantum dynamical semigroups, as exemplified by the damped harmonic oscillator and spin relaxation. Finally a symmetry preserving generalization of the Ghirardi-Rimini-Weber model is presented. (orig.).

Periodic versus chaotic dynamics in vibratory feeders

Abstract: Note: Times Cited: 6 Reference EPFL-ARTICLE-182972View record in Web of Science Record created on 2013-01-07, modified on 2016-08-09

The structure of the sodium molybdate (Na2MoO4) catalyst for water free dehydrogenation of methanol to formaldehyde

Abstract: Na2MoO4 has been found to have a peculiar catalytic behavior. The CH2O formation starts after a period of time at 670 Deg. Then the yield increases and reaches a max. after 12 h. The catalyst undergoes an extensive phase transformation prior to becoming active. [on SciFinder (R)]

Dynamic magneto-optical study of the intermediate state, current-voltage characteristics

Abstract: Keywords: supra ; Non-Linear Modelling ; Superconductivity Reference LANOS-ARTICLE-1989-002 Record created on 2004-12-03, modified on 2017-05-12