Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gauge parameterization of the $n$-field   We propose gauge parameterization of the three-dimensional $n$-field using
orthogonal SO(3)-matrix which, in turn, is defined by a field taking values in
the Lie algebra so(3) (rotational-angle field). The rotational-angle field has
an additional degree of freedom, which corresponds to the gauge degree of
freedom of rotations around the $n$-field. As a result, we obtain a gauge model
with local SO(2)=U(1) symmetry that does not contain a U(1) gauge field.

19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs