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In anisotropic media, is there a speed of light tensor like there is a refractive index tensor?
Lets say we have an homogeneous anisotropic medium where $\tilde\mu_r=\tilde\epsilon_r$ so we don't have to worry about polarization effecting anything. As such, the refractive index can be simply ...
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Refraction of matter waves
My question is a bit messy, so here is the background:
Normally the trajectory of a massive particle in the presence of a gravitational field is described in the context of general relativity.
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