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We prove propagation of -Gevrey regularity (s \in (0,1)\right. for the Vlasov-Poisson system on using a Fourier space method in analogy to the results proved for the 2D-Euler system in  and . More precisely, we give quantitative estimates for the growth of the -Gevrey norm and decay of the regularity radius for the solution of the system in terms of the force field and the volume of the support in the velocity variable of the distribution of matter. As an application, we show global existence of -Gevrey solutions () for the Vlasov-Poisson system in . Furthermore, the propagation of Gevrey regularity can be easily modified to obtain the same result in . In particular, this implies global existence of analytic and -Gevrey solutions () for the Vlasov-Poisson system in .
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Renato Velozo Ruiz, Gevrey regularity for the Vlasov-Poisson system. Ann. Inst. H. Poincaré Anal. Non Linéaire 38 (2021), no. 4, pp. 1145–1165DOI 10.1016/J.ANIHPC.2020.10.006