Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Examination of the stability of a rod-shaped structure in $^{24}$Mg   The stable existence of a six-$\alpha$ linear structure in highly excited
states of $^{24}$Mg is studied based on a systematic Cranked Hartree-Fock
calculation with various Skyrme-type interactions. Its stability is examined by
allowing the transition of the cluster structure to the shell-model like
structure. Especially, the six-$\alpha$ linear state is exposed to two major
instabilities: the bending motion, which is the main path for the transition to
low-lying states, and the spin-orbit interaction, which is the driving force to
break the $\alpha$ clusters and enhance the independent motion of the nucleons.
The linear structure with large angular momentum is obtained as a meta-stable
stationary state.

20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
16
The categories of this paper are: stat
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci