Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One Dimensional Mimicking of Electronic Structure: The Case for
  Exponentials   An exponential interaction is constructed so that one-dimensional atoms and
chains of atoms mimic the general behavior of their three-dimensional
counterparts. Relative to the more commonly used soft-Coulomb interaction, the
exponential greatly diminishes the computational time needed for calculating
highly accurate quantities with the density matrix renormalization group. This
is due to the use of a small matrix product operator and to exponentially
vanishing tails. Furthermore, its more rapid decay closely mimics the screened
Coulomb interaction in three dimensions. Choosing parameters to best match
earlier calculations, we report results for the one dimensional hydrogen atom,
uniform gas, and small atoms and molecules both exactly and in the local
density approximation.

27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom