Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: T-matrix in discrete oscillator representation   We investigate T-matrix for bound and continuous-spectrum states in the
discrete oscillator representation. The investigation is carried out for a
model problem - the particle in the field of a central potential. A system of
linear equations is derived to determine the coefficients of the T-matrix
expansion in the oscillator functions. We selected four potentials (Gaussian,
exponential, Yukawa, and square-well ones) to demonstrate peculiarities of the
T-matrix and its dependence on the potential shape. We also study how the
T-matrix expansion coefficients depend on the parameters of the oscillator
basis such as the oscillator length and the number of basis functions involved
in calculations.

11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas