Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bulk and edge-state arcs in non-hermitian coupled-resonator arrays   We describe the formation of bulk and edge arcs in the dispersion relation of
two-dimensional coupled-resonator arrays that are topologically trivial in the
hermitian limit. Each resonator provides two asymmetrically coupled internal
modes, as realized in noncircular open geometries, which enables the system to
exhibit non-hermitian physics. Neighboring resonators are coupled chirally to
induce non-hermitian symmetries. The bulk dispersion displays Fermi arcs
connecting spectral singularities known as exceptional points, and can be tuned
to display purely real and imaginary branches. At an interface between
resonators of different shape, one-dimensional edge states form that spectrally
align along complex arcs connecting different parts of the bulk bands. We also
describe conditions under which the edge-state arcs are free standing. These
features can be controlled via anisotropy in the resonator couplings.

31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph