Dirac's aether in relativistic quantum mechanics

The introduction by Dirac of a new aether model based on a stochastic covariant distribution of subquantum motions (corresponding to a "vacuum state" alive with fluctuations and randomness) is discussed with respect to the present experimental and theoretical discussion of nonlocality in EPR situations. It is shown (1) that one can deduce the de Broglie waves as real collective Markov processes on the top of Dirac's aether; (2) that the quantum potential associated with this aether's modification, by the presence of EPR photon pairs, yields a relativistic causal action at a distance which interprets the superluminal correlations recently established by Aspect et al.; (3) that the existence of the Einstein-de Broglie photon model (deduced from Dirac's aether) implies experimental predictions which conflict with the Copenhagen interpretation in certain specific testable interference experiments

Single-particle trajectories and interferences in quantum mechanics

In this paper some topics concerning the possibility of describing phenomena of quantum interference in terms of individual particle spacetime trajectories are reviewed. We focus our attention, on the one hand, on the recent experimental advances in neutron and photon interferometry and, on the other hand, on a theoretical analysis of the description of these experiments allowed by stochastic mechanics. It is argued that, even if no conclusive argument is yet at hand in both the theoretical and the experimental fields, the researches of the last 10 years now seem to favor Einstein's and de Broglie's realistic spacetime description and interpretation of quantum mechanics

Intrusion and extrusion of water in hydrophobic mesopores

We present experimental and theoretical results on intrusion-extrusion cycles of water in hydrophobic mesoporous materials, characterized by independent cylindrical pores. The intrusion, which takes place above the bulk saturation pressure, can be well described using a macroscopic capillary model. Once the material is saturated with water, extrusion takes place upon reduction of the externally applied pressure; Our results for the extrusion pressure can only be understood by assuming that the limiting extrusion mechanism is the nucleation of a vapour bubble inside the pores. A comparison of calculated and experimental nucleation pressures shows that a proper inclusion of line tension effects is necessary to account for the observed values of nucleation barriers. Negative line tensions of order $10^{-11} \mathrm{J.m}^{-1}$ are found for our system, in reasonable agreement with other experimental estimates of this quantity

Les référents du littéraire

Le processus de création littéraire, qu'essaie d'appréhender l'étude de l'arrière-texte, met en jeu un triple rapport : au monde extérieur, théâtre de nos vies individuelles et collectives, au monde intérieur des pensées conscientes ou inconscientes, aux œuvres littéraires ou artistiques qui font jouer ensemble ces deux mondes. Dès lors se repose la question du ou plutôt des référents, cette catégorie hétérogène étant envisagée ici sur un mode pluriel. L’espace – géographique, psychique, sémiotique – pourrait être la notion aidant à concevoir l’articulation de cette pluralité à l’œuvre dans la relation littéraire

Science, épistémologie, philosophie

Vigier Jean-Pierre. Science, épistémologie, philosophie. In: Raison présente, n°55, 2e trimestre 1980. Raisons rationalités rationalismes. pp. 75-79

Le matérialisme d'Einstein et l'aether de Dirac

Vigier Jean-Pierre. Le matérialisme d'Einstein et l'aether de Dirac. In: Communications, 41, 1985. L'espace perdu et le temps retrouvé, sous la direction de Rémy Lestienne et Edgar Morin. pp. 27-61

Louis de Broglie et Albert Einstein

Vigier Jean-Pierre. Louis de Broglie et Albert Einstein. In: Raison présente, n°84, 4e trimestre 1987. La nouvelle physique abolit-elle le réel ? pp. 101-107