Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bloch Oscillations in the Optical Waveguide Array   The multiple scattering formalism is proposed describing the guided modes in
the optical waveguide array within the framework of macroscopic
electrodynamics. It is shown that, under sufficiently general assumptions, our
approach justifies the phenomenological model used widely to treat various
physical phenomena in the optical micro- and nano-structures. It is found that
the theory developed in this paper describes the real experiments in which the
the Bloch oscillations are observed. Surprisingly, not only qualitative but
also reasonably quantitative agreement is found.

3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs