Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Soliton emission in amplifying optical lattice surfaces   We address surface solitons supported by the interface of optical lattices
imprinted in saturable media with surface-localized gain. The nonlinearity
saturation puts restrictions on the maximal energy flow carried by surface
solitons. As a consequence, the presence of thin amplifying layer near the
surface results in the controllable emission of solitons towards the lattice at
angles depending on the amplification rate and on lattice depth.

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The categories of this paper are: patt-sol
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The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: stat
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat