Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A local density functional for the short-range part of the
  electron-electron interaction   Motivated by recent suggestions --to split the electron-electron interaction
into a short-range part, to be treated within the density functional theory,
and a long-range part, to be handled by other techniques-- we compute, with a
diffusion Monte Carlo method, the ground-state energy of a uniform electron gas
with a modified, short-range-only electron-electron interaction $\erfc(\mu
r)/r$, for different values of the cutoff parameter $\mu$ and of the electron
density. After deriving some exact limits, we propose an analytic
representation of the correlation energy which accurately fits our Monte Carlo
data and also includes, by construction, these exact limits, thus providing a
reliable ``short-range local-density functional''.

3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ