1D Vlasov-Poisson equations with electron sheet initial data

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December 2010, 3(4): 729-754. doi: 10.3934/krm.2010.3.729

1D Vlasov-Poisson equations with electron sheet initial data

1.	Department of Mathematics, University of Wisconsin, Madison, WI 53706, United States

Received April 2010 Revised September 2010 Published October 2010

Abstract
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We construct global weak solutions for both one-component and two-component Vlasov-Poisson equations in a single space dimension with electron sheet initial data. We give an explicit formula of the weak solution of the one-component Vlasov-Poisson equation provided the electron sheet remains a graph in the $x$-$v$ plane, and we give sharp conditions on whether the moment of this explicit weak solution will blow up or not. We introduce new parameters, which we call "charge indexes", to construct the global weak solution. The moment of the weak solution corresponds to a multi-valued solution to the Euler-Poisson system. Our method guarantees that even if concentration in charge develops, it will disappear immediately. We extend our method to more singular initial data, where charge can concentrate on points at time $t=0$. Examples show that for one-component Vlasov-Poisson equation our weak solution agrees with the continuous fission weak solution, which is the zero diffusion limit of the Fokker-Planck equation. Finally, we propose a novel numerical method to compute solutions of both one-component and two-component Vlasov-Poisson equations and the multi-valued solution of the one-dimensional Euler-Poisson equation.

Keywords: critical thresholds, Vlasov-Poisson equation, Euler-Poisson equation, multi-valued solution..

Mathematics Subject Classification: Primary: 35D30; Secondary: 35Q8.

Citation: Dongming Wei. 1D Vlasov-Poisson equations with electron sheet initial data. Kinetic & Related Models, 2010, 3 (4) : 729-754. doi: 10.3934/krm.2010.3.729

References:

[1]	F. Bouchut, Global weak solution of the Vlasov-Poisson system for small electrons mass,, Comm PDEs, 16 (1991), 1337. Google Scholar
[2]	D. Chae and E. Tadmor, On the finite time blow-up of the Euler-Poisson equations in R2,, Commun. Math. Sci., 6 (2008), 785. Google Scholar
[3]	B. Cheng and E. Tadmor, Long time existence of smooth solutions for the rapidly rotating shallow-water and Euler equations,, SIAM J. Math. Anal., 39 (2008), 1668. Google Scholar
[4]	R. S. Dziurzynski, "Patches of Electrons and Electron Sheets for the 1D Vlasov-Poisson Equation,", Ph.D. dissertation (supervised by A. Majda), (1987). Google Scholar
[5]	S. Engelberg, H. Liu and E. Tadmor, Critical thresholds in Euler-Poisson equations,, Indiana Univ. Math. J., 50 (2001), 109. Google Scholar
[6]	S. Jin and X. T. Li, Multi-phase computations of the semiclassical limit of the Schrödinger equation and related problems: Whitham vs Wigner,, Physica D, 182 (2003), 46. Google Scholar
[7]	S. Jin, X. M. Liao and X. Yang, The Vlasov-Poisson equations as the semiclassical Limit of the Schrödinger-Poisson equations: A numerical study,, Journal of Hyperbolic Differential Equations, 5 (2008), 569. Google Scholar
[8]	X. T. Li, J. G. Wohlbier, S. Jin and J. H. Booske, An Eulerian method for computing multi-valued solutions of the Euler-Poisson equaqtions and applications to wave breaking in klystrons,, Phys. Rev. E., 70 (2004). Google Scholar
[9]	P. L. Lions and B. Perthame, Propagation of moments and regularity for the 3-dimensional Vlasov-Poisson system,, Inventiones Mathematicae, 105 (1991), 415. Google Scholar
[10]	H. Liu and E. Tadmor, Spectral dynamics of the velocity gradient field in restricted flows,, Comm. Math. Phys., 228 (2002), 435. Google Scholar
[11]	H. Liu and E. Tadmor, Critical thresholds in 2D restricted Euler-Poisson equations,, SIAM J. Appl. Math., 63 (2003), 1889. Google Scholar
[12]	H. Liu, E. Tadmor and D. Wei, Global regularity of the 4D restricted Euler equations,, Physica D, 239 (2010), 1225. Google Scholar
[13]	A. Majda, G. Majda and Y. X. Zheng, Concentrations in the one-dimensional Vlasov-Poisson equation I: Temporal development and non-unique weak solutions in the single component case,, Physica D, 74 (1994), 268. Google Scholar
[14]	A. Majda, G. Majda and Y. X. Zheng, Concentrations in the one-dimensiolal Vlasov-Poisson equations. II: Screening and the necessity for measure-valued solutions in the two component case,, Physica D, 79 (1994), 41. Google Scholar
[15]	E. Tadmor and D. Wei, On the global regularity of sub-critical Euler-Poisson equations with pressure,, J. European Math. Society, 10 (2008), 757. Google Scholar
[16]	Y. X. Zheng and A. Majda, Existence of global weak solutions to one-component Vlasov-Poisson and Fokker-Planck-Poisson systems in one space dimension with messures as initial data,, Comm. on Pure and Applied Math., XLVII (1994), 1365. Google Scholar

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References:

[1]	F. Bouchut, Global weak solution of the Vlasov-Poisson system for small electrons mass,, Comm PDEs, 16 (1991), 1337. Google Scholar
[2]	D. Chae and E. Tadmor, On the finite time blow-up of the Euler-Poisson equations in R2,, Commun. Math. Sci., 6 (2008), 785. Google Scholar
[3]	B. Cheng and E. Tadmor, Long time existence of smooth solutions for the rapidly rotating shallow-water and Euler equations,, SIAM J. Math. Anal., 39 (2008), 1668. Google Scholar
[4]	R. S. Dziurzynski, "Patches of Electrons and Electron Sheets for the 1D Vlasov-Poisson Equation,", Ph.D. dissertation (supervised by A. Majda), (1987). Google Scholar
[5]	S. Engelberg, H. Liu and E. Tadmor, Critical thresholds in Euler-Poisson equations,, Indiana Univ. Math. J., 50 (2001), 109. Google Scholar
[6]	S. Jin and X. T. Li, Multi-phase computations of the semiclassical limit of the Schrödinger equation and related problems: Whitham vs Wigner,, Physica D, 182 (2003), 46. Google Scholar
[7]	S. Jin, X. M. Liao and X. Yang, The Vlasov-Poisson equations as the semiclassical Limit of the Schrödinger-Poisson equations: A numerical study,, Journal of Hyperbolic Differential Equations, 5 (2008), 569. Google Scholar
[8]	X. T. Li, J. G. Wohlbier, S. Jin and J. H. Booske, An Eulerian method for computing multi-valued solutions of the Euler-Poisson equaqtions and applications to wave breaking in klystrons,, Phys. Rev. E., 70 (2004). Google Scholar
[9]	P. L. Lions and B. Perthame, Propagation of moments and regularity for the 3-dimensional Vlasov-Poisson system,, Inventiones Mathematicae, 105 (1991), 415. Google Scholar
[10]	H. Liu and E. Tadmor, Spectral dynamics of the velocity gradient field in restricted flows,, Comm. Math. Phys., 228 (2002), 435. Google Scholar
[11]	H. Liu and E. Tadmor, Critical thresholds in 2D restricted Euler-Poisson equations,, SIAM J. Appl. Math., 63 (2003), 1889. Google Scholar
[12]	H. Liu, E. Tadmor and D. Wei, Global regularity of the 4D restricted Euler equations,, Physica D, 239 (2010), 1225. Google Scholar
[13]	A. Majda, G. Majda and Y. X. Zheng, Concentrations in the one-dimensional Vlasov-Poisson equation I: Temporal development and non-unique weak solutions in the single component case,, Physica D, 74 (1994), 268. Google Scholar
[14]	A. Majda, G. Majda and Y. X. Zheng, Concentrations in the one-dimensiolal Vlasov-Poisson equations. II: Screening and the necessity for measure-valued solutions in the two component case,, Physica D, 79 (1994), 41. Google Scholar
[15]	E. Tadmor and D. Wei, On the global regularity of sub-critical Euler-Poisson equations with pressure,, J. European Math. Society, 10 (2008), 757. Google Scholar
[16]	Y. X. Zheng and A. Majda, Existence of global weak solutions to one-component Vlasov-Poisson and Fokker-Planck-Poisson systems in one space dimension with messures as initial data,, Comm. on Pure and Applied Math., XLVII (1994), 1365. Google Scholar

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