A Time-Asymmetric Process in Central Force Scatterings

Ramis Movassagh

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arXiv · 1008.0875

A Time-Asymmetric Process in Central Force Scatterings

Ramis Movassagh

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Abstract

This article puts forth a process applicable to central force scatterings. Under certain assumptions, we show that in attractive force fields a high speed particle with a small mass speeding through space, statistically loses energy by colliding softly with large masses that move slowly and randomly. Furthermore, we show that the opposite holds in repulsive force fields: the small particle statistically gains energy. This effect is small and is mainly due to asymmetric energy exchange of the transverse (i.e., perpendicular) collisions. We derive a formula that quantifies this effect (Eq. 12). We then put this work in a broader statistical context and discuss its consistency with established results.

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physics.class-ph astro-ph.CO astro-ph.GA cond-mat.stat-mech math-ph math.MP

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Ramis Movassagh. 2010-08-04. A Time-Asymmetric Process in Central Force Scatterings. https://arxiv.org/abs/1008.0875

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