Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunneling and Chaos   Over the preceeding twenty years, the role of underlying classical dynamics
in quantum mechanical tunneling has received considerable attention. A number
of new tunneling phenomena have been uncovered that have been directly linked
to the set of dynamical possibilities arising in simple systems that contain at
least some chaotic motion. These tunneling phenomena can be identified by their
novel $\hbar$-dependencies and/or statistical behaviors. We summarize a
sampling of these phenomena and mention some applications.

10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs