Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Uniaxial dielectric mediums with hyperbolic dispersion relations   The dispersion relations for conventional uniaxial dielectric mediums may be
characterized as elliptical or elliptical-like, according to whether the medium
is nondissipative or dissipative, respectively. However, under certain
constitutive parameter regimes, the dispersion relations may be hyperbolic or
hyperbolic-like. We investigate planewave propagation in a
hyperbolic/hyperbolic-like uniaxial dielectric medium. For both evanescent and
nonevanescent propagation, the phase velocity is found to be positive with
respect to the time-averaged Poynting vector. A conceptualization of a
hyperbolic--like uniaxial medium as a homogenized composite medium is
presented.

26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th