Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Complex response and polariton-like dispersion splitting in periodic
  metal nanoparticle chains   We show that guiding of optical signals in chains of metal nanoparticles is
subject to a surprisingly complex dispersion relation. Retardation causes the
dispersion relation to split in two anticrossing branches, as common for
polaritons. While huge radiation losses occur above the light line, just below
the light line the micron-sized loss lengths are much longer than expected. The
anticrossing allows to create highly localized energy distributions in finite
arrays that can be tuned via the illumination wavelength. Our results apply to
all linear chains of coupled resonant scatterers.

31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess