Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chaotic Spiral Galaxies   We study the role of asymptotic curves in supporting the spiral structure of
a N-body model simulating a barred spiral galaxy. Chaotic orbits with initial
conditions on the unstable asymptotic curves of the main unstable periodic
orbits follow the shape of the periodic orbits for an initial interval of time
and then they are diffused outwards supporting the spiral structure of the
galaxy. Chaotic orbits having small deviations from the unstable periodic
orbits, stay close and along the corresponding unstable asymptotic manifolds,
supporting the spiral structure for more than 10 rotations of the bar. Chaotic
orbits of different Jacobi constants support different parts of the spiral
structure. We also study the diffusion rate of chaotic orbits outwards and find
that chaotic orbits that support the outer parts of the galaxy are diffused
outwards more slowly than the orbits supporting the inner parts of the spiral
structure.

11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph