Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Calculating electron momentum densities and Compton profiles using the
  linear tetrahedron method   A method for computing electron momentum densities and Compton profiles from
ab initio calculations is presented. Reciprocal space is divided into
optimally-shaped tetrahedra for interpolation, and the linear tetrahedron
method is used to obtain the momentum density and its projections such as
Compton profiles. Results are presented and evaluated against experimental data
for Be, Cu, Ni, Fe3Pt, and YBa2Cu4O8, demonstrating the accuracy of our method
in a wide variety of crystal structures.

9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th