Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Projective Quantum Monte Carlo Method for the Anderson
  Impurity Model and its Application to Dynamical Mean Field Theory"   A comment about importance of Anderson's orthogonality catastrophe for
projective Quantum Monte Carlo methods.

2
The categories of this paper are: math
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con