Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photonic simulation of topological excitations in metamaterials   Condensed matter systems with topological order and metamaterials with
left-handed chirality have attracted recently extensive interests in the fields
of physics and optics. So far the two fields are independent, and there is no
work to address their connection. Here we propose to establish the relation
between the topological order in condensed matter systems and the chirality in
metamaterials, by mapping explicitly Maxwell's equations to the Dirac equation
in one dimension. We report an experimental implement of the band inversion in
the Dirac equation, which accompanies change of chirality of electromagnetic
wave in metamaterials, and the first microwave measurement of topological
excitations and topological phases in one dimension. Our finding provides a
proof-of-principle example that electromagnetic wave in the metamaterials can
be used to simulate the topological order in condensed matter systems and
quantum phenomena in relativistic quantum mechanics in a controlled laboratory
environment.

16
The categories of this paper are: stat
19
The categories of this paper are: eess
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph