Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability of $N$-soliton molecules in dispersion-managed optical fibers   We investigate the stability of $N$-soliton molecules in dispersion-managed
optical fibers with focus on the recently realized 2- and 3-soliton molecules.
We calculate their binding energy using an averaged nonlinear Schr$\rm{\ddot
o}$dinger equation. A combination of variational and numerical solutions to
this equation shows that it describes well the intensity profiles and relative
separations of the experimental molecules. Extending the calculation to larger
values of $N$, the binding energy per soliton is found to saturate at N
$N\ge7$.

17
The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
19
The categories of this paper are: eess