Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phases of frustrated quantum antiferromagnets on the square and
  triangular lattices   We analyze the zero temperature phase diagrams of the spin S quantum
antiferromagnet on square and triangular lattices with competing nearest and
next-nearest exchange interactions as well as biquadratic couplings. We
approach the problem from the large S limit. Our primary focus is on
determining the extent to which the existence and character of any quantum
disordered phases can be inferred from this approach.

8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an