Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New Results on Quantum Chaos in Atomic Nuclei   In atomic nuclei, ordered and chaotic states generally coexist. In this paper
the transition from ordered to chaotic states will be discussed in the
framework of roto-vibrational and shell models. In particular for $^{160}Gd$,
in the roto-vibrational model, the Poincar\`e sections clearly show the
transition from order to chaos for different values of rotational frequency.
Furthermore, the spectral statistics of low-lying states of several $fp$ shell
nuclei are studied with realistic shell-model calculations.

17
The categories of this paper are: q-fin
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs