Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunnelling of plane waves through a square barrier   The time evolution of plane waves in the presence of a 1-dimensional square
quantum barrier is considered. Comparison is made between the cases of an
infinite and a cut-off (shutter) initial plane wave. The difference is relevant
when the results are applied to the analysis of the tunnelling regime. This
work is focused on the analytical calculation of the time-evolved solution and
highlights the contribution of the resonant (Gamow) states.
  PACS numbers: 11.10.Ef, 11.10.Lm, 04.60

26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat