Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Quantum mechanical versus semiclassical tunneling and decay
  times"   Shegelski, Kavka, and Hynbida have developed a method for calculating the
lifetime of a particle initially localized in a potential well exactly quantum
mechanically by employing a heuristic expression for the lifetime <t>. Their
method allows for the inclusion of a bound state, and their results for
tunneling through a centrifugal barrier demonstrate the major role that bound
states play in determining the lifetime. In this comment, I show that one can
greatly simplify the analysis by calculating <t^2>^(1/2) instead. Results
obtained are exact when no bound state is present. In the presence of a bound
state the results are only approximate but still illustrate the influence that
the presence of a bound state has on the lifetime.

26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin