Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deconfined criticality in the frustrated Heisenberg honeycomb
  antiferromagnet   Using the density-matrix renormalization group, we determine the phase
diagram of the spin 1/2 Heisenberg antiferromagnet on a honeycomb lattice with
a nearest neighbor interaction J1 and a frustrating, next-neighbor exchange J2.
As frustration increases, the ground state exhibits Neel, plaquette and dimer
orders, with critical points at J2/J1 = 0.22 and 0.35. We observe that both the
spin gap and the corresponding order parameters vanish continuously at both the
critical points, indicating the presence of deconfined quantum criticality.

17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th