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Springer eBooks

The pathwise description of quantum scattering in stochastic mechanics

Eric A. Carlen

Published Apr 6, 2008• 5 citations
Publisher
DOI
10.1007/3540171665_60

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Potential scattering in stochastic mechanics

Eric A. Carlen

In this paper we study the sample path trajectories of the diffusions which are to describe potential scattering experiments in stochastic mechanics. Our main result asserts that the behavior of the trajectories is physically correct in that they settle down to straight line motion at constant speed with probability one. This limiting velocity determines a final momentum random variable, and we show that it has the same distribution as does the final momentum for the corresponding quantum state. Finally, we discuss the possible role of such a pathwise description of quantum scattering in Mathematical Physics On etudie les trajectoires des processus de diffusion qui doivent decrire les experiences de diffusion par un potentiel en mecanique stochastique. Le resultat principal est que le comportement des trajectoires est physiquement correct en ce sens qu'elles tendent vers des mouvements rectilignes uniformes avec probabilite un, la vitesse limite determine une grandeur aleatoire representant l'impulsion finale et on montre qu'elle a la meme distribution que l'impulsion finale dans l'etat quantique correspondant. On discute le role possible d'une telle description de la diffusion quantique en termes de chemins en physique mathematique

Annales De L Institut Henri Poincare-physique Theorique•Jan 1, 1985•10 citations
In this paper we study the sample path trajectories of the diffusions which are to describe potential scattering experiments in stochastic mechanics. Our main result asserts that the behavior of the trajectories is physically correct in that they settle down to straight line motion at constant speed with probability one. This limiting velocity determines a final momentum random variable, and we show that it has the same distribution as does the final momentum for the corresponding quantum state. Finally, we discuss the possible role of such a pathwise description of quantum scattering in Mathematical Physics On etudie les trajectoires des processus de diffusion qui doivent decrire les experiences de diffusion par un potentiel en mecanique stochastique. Le resultat principal est que le comportement des trajectoires est physiquement correct en ce sens qu'elles tendent vers des mouvements rectilignes uniformes avec probabilite un, la vitesse limite determine une grandeur aleatoire representant l'impulsion finale et on montre qu'elle a la meme distribution que l'impulsion finale dans l'etat quantique correspondant. On discute le role possible d'une telle description de la diffusion quantique en termes de chemins en physique mathematique