Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum chaos with non-periodic, complex orbits in the Resonant
  Tunneling Diode   We show that a special type of orbits, which are non-periodic and complex,
'Saddle Orbits' (SOs) describe accurately the quantal and experimental current
oscillations in the Resonant Tunneling Diode in tilted fields. This is the
first demonstration that one needs to abandon the periodic orbits (POs)
paradigm in favour of this new and peculiar type of orbit. The SOs solve the
puzzle of broad regions of experimental oscillations where we find no real or
complex PO that can explain the data. The SOs succeeds in regimes involving
several non-isolated POs, where PO formulas fail.

27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs