Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement induced by nonadiabatic chaos   We investigate entanglement between electronic and nuclear degrees of freedom
for a model nonadiabatic system. We find that entanglement (measured by the von
Neumann entropy of the subsystem for the eigenstates) is large in a statistical
sense when the system shows ``nonadiabatic chaos'' behavior which was found in
our previous work [Phys. Rev. E {\bf 63}, 066221 (2001)]. We also discuss
non-statistical behavior of the eigenstates for the regular cases.

11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc