Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Skyrmions and domain walls   We study the 3+1 dimensional Skyrme model with a mass term different from the
usual one. We show that this new model possesses domain walls solutions. We
describe how, in the equivalent 2+1 dimensional model, the Skyrmion is absorbed
by the wall.

28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin