Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the wave-like energy estimates of Klein-Gordon type equations with
  time dependent potential   We consider the conditions for the time dependent potential in which the
energy of the Cauchy problem of Klein-Gordon type equation asymptotically
behaves like the energy of the wave equation. The conclusion of this paper is
that the condition is not always given by the order of the potential itself,
but should be given by "generalized zero mean condition", which is represented
by the integral of the potential. We also introduce "generalized modified
energy conservation" in order to describe the appropriate energy for our
problem.

33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an