Analysis & PDE

  • Anal. PDE
  • Volume 10, Number 7 (2017), 1539-1612.

A vector field method for relativistic transport equations with applications

David Fajman, Jérémie Joudioux, and Jacques Smulevici

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We adapt the vector field method of Klainerman to the study of relativistic transport equations. First, we prove robust decay estimates for velocity averages of solutions to the relativistic massive and massless transport equations, without any compact support requirements (in x or v) for the distribution functions. In the second part of this article, we apply our method to the study of the massive and massless Vlasov–Nordström systems. In the massive case, we prove global existence and (almost) optimal decay estimates for solutions in dimensions n 4 under some smallness assumptions. In the massless case, the system decouples and we prove optimal decay estimates for the solutions in dimensions n 4 for arbitrarily large data, and in dimension 3 under some smallness assumptions, exploiting a certain form of the null condition satisfied by the equations. The 3-dimensional massive case requires an extension of our method and will be treated in future work.

Article information

Anal. PDE, Volume 10, Number 7 (2017), 1539-1612.

Received: 28 April 2016
Revised: 13 April 2017
Accepted: 9 May 2017
First available in Project Euclid: 16 November 2017

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Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier

Primary: 35B40: Asymptotic behavior of solutions 35Q83: Vlasov-like equations 83C30: Asymptotic procedures (radiation, news functions, H-spaces, etc.)

relativistic kinetic equations wave equation vector-field method asymptotic behaviour nonlinear stability Vlasov–Nordström system


Fajman, David; Joudioux, Jérémie; Smulevici, Jacques. A vector field method for relativistic transport equations with applications. Anal. PDE 10 (2017), no. 7, 1539--1612. doi:10.2140/apde.2017.10.1539.

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