Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generations of polygonal soliton clusters and fundamental solitons by
  radially-azimuthally phase-modulated necklace-ring beams in dissipative
  systems   We demonstrate that, in a two-dimensional dissipative medium described by the
cubic-quintic (CQ) complex Ginzburg-Landau (CGL) equation with the viscous
(spectral-filtering) term, necklace rings carrying a mixed radial-azimuthal
phase modulation can evolve into polygonal or quasi-polygonal stable soliton
clusters, and into stable fundamental solitons. The outcome of the evolution is
controlled by the depth and azimuthal anharmonicity of the phase-modulation
profile, or by the radius and number of "beads" in the initial necklace ring.
Threshold characteristics of the evolution of the patterns are identified and
explained. Parameter regions for the formation of the stable polygonal and
quasi-polygonal soliton clusters, and of stable fundamental solitons, are
identified. The model with the CQ terms replaced by the full saturable
nonlinearity produces essentially the same set of the basic dynamical
scenarios; hence this set is a universal one for the CGL models.

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The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin