Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Variational Sturmian Approximation: A nonperturbative method of solving
  time-independent Schr\"odinger equation   A variationally improved Sturmian approximation for solving time-independent
Schr\"odinger equation is developed. This approximation is used to obtain the
energy levels of a quartic anharmonic oscillator, a quartic potential, and a
Gaussian potential. The results are compared with those of the perturbation
theory, the WKB approximation, and the accurate numerical values.

14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn