Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pair density functional theory by means of the correlated wave function   We present a density functional scheme for calculating the pair density (PD)
by means of the correlated wave function. This scheme is free from both of
problems related to PD functional theory, i.e., (a) the need to constrain the
variational principle to $N$-representable PDs and (b) the development of a
kinetic energy functional. By using the correlated wave function, the searching
region for the ground-state PD is substantially extended as compared with our
previous theory[Physica B \textbf{372} (2007), in press]. The variational
principle results in the simultaneous equations that yield the best PD beyond
the previous theory, not to mention the Hartree-Fock approximation.

30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
19
The categories of this paper are: eess