Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diffusion stabilizes cavity solitons in bidirectional lasers   We study the influence of field diffusion on the spatial localized structures
(cavity solitons) recently predicted in bidirectional lasers. We find twofold
positive role of the diffusion: 1) it increases the stability range of the
individual (isolated) solitons; 2) it reduces the long-range interaction
between the cavity solitons. Latter allows the independent manipulation
(writing and erasing) of individual cavity solitons.

3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th