Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fourth Order Diffusion Monte Carlo Algorithms for Solving Quantum
  Many-Body Problems   By decomposing the important sampled imaginary time Schr\"odinger evolution
operator to fourth order with positive coefficients, we derived a number of
distinct fourth order Diffusion Monte Carlo algorithms. These sophisticated
algorithms require higher derivatives of the drift velocity and local energy
and are more complicated to program. However, they allowed very large time
steps to be used, converged faster with lesser correlations, and virtually
eliminated the step size error. We demonstrated the effectiveness of these
quartic algorithms by solving for the ground state properties of bulk liquid
helium.

10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con