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Delocalization effect on the relaxation of inhomogeneous gravitational systems

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The correct description of encounters in anN-body gravitational system introduces a variety of effects which are ignored in the standard discussions of the relaxation proces. The present parer gives an evaluation of the delocalization effect, corresponding to the fact that the distribution functions for particles engaged in an encounter are necessarily to be evaluated at distinct points in space. The calculation is carried through in the framework of the weak-coupling theory of binary encounters and gives a typical increase in the relaxation time of about 10%.

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Parisot, J.-., Severne, G. Delocalization effect on the relaxation of inhomogeneous gravitational systems. Astrophys Space Sci 61, 121–128 (1979). https://doi.org/10.1007/BF00645796

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  • Distribution Function
  • Relaxation Time
  • Distinct Point
  • Correct Description
  • Gravitational System