Mathematics – Numerical Analysis
Scientific paper
2008-03-14
PIERS Online, Vol. 4, No. 7, 711-715, 2008
Mathematics
Numerical Analysis
5 pages, 3 figures, submitted to Progress in Electromagnetics Research Symposium (PIERS) 2008 proceedings
Scientific paper
10.2529/PIERS071019000855
In recent years, two important techniques for geometric numerical discretization have been developed. In computational electromagnetics, spatial discretization has been improved by the use of mixed finite elements and discrete differential forms. Simultaneously, the dynamical systems and mechanics communities have developed structure-preserving time integrators, notably variational integrators that are constructed from a Lagrangian action principle. Here, we discuss how to combine these two frameworks to develop variational spacetime integrators for Maxwell's equations. Extending our previous work, which first introduced this variational perspective for Maxwell's equations without sources, we also show here how to incorporate free sources of charge and current.
Desbrun Mathieu
Marsden Jerrold E.
Stern Ari
Tong Yiying
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