Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hyperbolic metamaterial interfaces: Hawking radiation from Rindler
  horizons and the "end of time"   Extraordinary rays in a hyperbolic metamaterial behave as particle world
lines in a three dimensional (2+1) Minkowski spacetime. We analyze
electromagnetic field behavior at the boundaries of this effective spacetime
depending on the boundary orientation. If the boundary is perpendicular to the
space-like direction in the metamaterial, an effective Rindler horizon may be
observed which produces Hawking radiation. On the other hand, if the boundary
is perpendicular to the time-like direction an unusual physics situation is
created, which can be called "the end of time". It appears that in the lossless
approximation electromagnetic field diverges at the interface in both
situations. Experimental observations of the "end of time" using plasmonic
metamaterials confirm this conclusion.

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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: eess