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SUMMARY:Hamiltonian models in plasma physics and their discretization - Er
 ic Sonnendrucker (Max Planck Institute for Plasma Physics\, Munich Univers
 ity of Technology)
DTSTART:20220425T111500Z
DTEND:20220425T121500Z
UID:TALK171824@talks.cam.ac.uk
DESCRIPTION:Many models in plasma physics can be derived from a non canoni
 cal hamiltonian formulation expressed using a Poisson bracket and a conser
 ved Hamiltonian.For long time simulations\, conservation of invariants com
 ing from the hamiltonian formulation are essential. This can be achieved i
 n particular by looking for a discrete Poisson bracket and Hamiltonian and
  then using splitting of either the bracket or the hamiltonian.As examples
  we will consider the Vlasov-Maxwell equations as well as hybrid fluid-kin
 etic models.We shall also show how dissipative effects can be added using 
 a symmetric positive non definite bracket and a dissipated entropy.
LOCATION:Seminar Room 1\, Newton Institute
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