On Aug 28, 2009, at 5:28 PM, Kevin Huang wrote:
When I simulate a medium with a n isotropic static negative
permittivity, all field values and flux spectra are NaN.
I've found a few discussion threads reporting similar issues but
none of them were answered or properly resolved.
This is explained in the Meep FAQ:
http://ab-initio.mit.edu/wiki/index.php/Meep_FAQ
Short answer: it has nothing to do with Meep, and everything to do
with Maxwell's equations. Nondispersive negative permittivity leads
to exponentially growing fields.
Steven
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