Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Density matrix renormalization group and wave function factorization for
  nuclei   We employ the density matrix renormalization group (DMRG) and the wave
function factorization method for the numerical solution of large scale nuclear
structure problems. The DMRG exhibits an improved convergence for problems with
realistic interactions due to the implementation of the finite algorithm. The
wave function factorization of fpg-shell nuclei yields rapidly converging
approximations that are at the present frontier for large-scale shell model
calculations.

2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg