Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Klein-Gordon equation for a particles in brane model   Brane model of universe is considered for a free particle. Conservation laws
on the brane are obtained using the symmetry properties of the brane. Equation
of motion is derived for a particle using variation principle from these
conservation laws. This equation has a form of Klein-Gordon equation.
Comparison of squared Dirac-Fok-Ivanenko equation for a spin particle with
Klein-Gordon equation in curved space has given an expression for chiral spin
current variation through the derivative of spin connectivity. This chiral spin
current is anomalous spin current corresponding to spontaneous chiral symmetry
breaking of massive particle in the space of KG equation solutions.

28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
2
The categories of this paper are: math