Abstract
The Vlasov–Poisson system describes interacting systems of collisionless particles. For solutions with small initial data in three dimensions it is known that the spatial density of particles decays as t −3 at late times. In this paper this statement is refined to show that each derivative of the density which is taken leads to an extra power of decay, so that in N dimensions for \({N \geqq 3}\) the derivative of the density of order k decays as t −N-k. An asymptotic formula for the solution at late times is also obtained.
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Communicated by Y. Brenier
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Hwang, H.J., Rendall, A.D. & Velázquez, J.J.L. Optimal Gradient Estimates and Asymptotic Behaviour for the Vlasov–Poisson System with Small Initial Data. Arch Rational Mech Anal 200, 313–360 (2011). https://doi.org/10.1007/s00205-011-0405-3
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DOI: https://doi.org/10.1007/s00205-011-0405-3