Causality and the Arrow of Classical Time

Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 31 (1):1-13 (2000)
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Abstract

It is claimed that the `problem of the arrow of time in classical dynamics' has been solved. Since all classical particles have a self-field (gravitational and in some cases also electromagnetic), their dynamics must include self-interaction. This fact and the observation that the domain of validity of classical physics is restricted to distances not less than of the order of a Compton wavelength (thus excluding point particles), leads to the conclusion that the fundamental classical equations of motion are not invariant under time reversal: retarded self-interactions lead to different equations than advanced ones. Since causality (the time order of cause and effect) requires retarded rather than advanced self-interaction, it is causality which is ultimately responsible for the arrow of time. Classical motions described by equations with advanced self-interactions differ from retarded ones and do not occur in nature.

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Citations of this work

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References found in this work

The direction of time.Hans Reichenbach - 1956 - Mineola, N.Y.: Dover Publications. Edited by Maria Reichenbach.
The Direction of Time.Hans Reichenbach - 1956 - Philosophy 34 (128):65-66.
The Nature of the Physical World.A. Eddington - 1928 - Humana Mente 4 (14):252-255.

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