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Bienvenue - Laboratoire Jacques-Louis Lions




Paris Cité
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Key figures

Key figures

189 people work at LJLL

86 permanent staff

80 researchers and permanent lecturers

6 engineers, technicians and administrative staff

103 non-permanent staff

74 Phd students

15 post-doc and ATER

14 emeritus scholars and external collaborators


January 2022


2012-GdT ITER - S. Hirstoaga


Two-Scale Macro-Micro decomposition of the Vlasov equation
with a strong magnetic field



A two-scale macro-micro decomposition of the Vlasov equation consists in writing the solution of the equation as a sum of two oscillating functions with circumscribed oscillations. The first of these functions is close in some sense to the two-scale limit of the solution and the second one is a correction built to offset this limit. The aim of such a decomposition is to be the starting point for the construction of two-scale asymptotic-preserving schemes.