Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hyperbolic Weyl point in reciprocal chiral metamaterial   We report the existence of Weyl points in a class of non-central symmetric
metamaterials, which has time reversal symmetry, but does not have inversion
symmetry due to chiral coupling between electric and magnetic fields. This
class of metamaterial exhibits either type-I or type-II Weyl points depending
on its non-local response. We also provide a physical realization of such
metamaterial consisting of an array of metal wires in the shape of elliptical
helixes which exhibits type-II Weyl points.

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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
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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: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn