Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Calculation of eigenvalues by Greens-functions and the
  Lippmann-Schwinger equation   We calculate eigenvalues of one-dimensional quantum-systems by the exact
numerical solution of the Lippmann-Schwinger equation, analogous to the
scattering problem. To illustrate our method, we treat elementary problems: the
harmonic and quartic oscillator, a symmetric and a skew double-well potential,
and potentials with finite and infinite depth. Furthermore, we show how our
method can be used for eigenvalue-engineering.

26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg