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ComputationalRadiationPhysics / picongpu

Performance-Portable Particle-in-Cell Simulations for the Exascale Era :sparkles:
https://picongpu.readthedocs.io
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A new Rhombi-in-Plane field solver #2999

Open sbastrakov opened 5 years ago

sbastrakov commented 5 years ago

Creating an issue to document. A new finite-difference Maxwell solver with no dispersion along one axis is proposed in a recent paper. Its properties are somewhat similar to the schemes by Lehe, Cole, Cowan, and Pukhov's earlier scheme.

However, it uses an original rhombi-based grid, rather than the standard Yee grid. Which makes it harder to implement into an existing code, but should work better with a boosted frame (as the paper claims). The paper also has some considerations on shortcomings of the pseudo-spectral methods.

sbastrakov commented 5 years ago

On a similar topic, there is an interesting work from Helmholtz Institute Jena on tuning the coefficients of such schemes via solving an optimization problem.