Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Massless Fermions and the Instanton Dipole Liquid in Compact QED_3   We study the consequences of including parity preserving matter for the
effective dual theory corresponding to compact QED_3; in particular we focus on
the effect of that contribution on the confinement-deconfinement properties of
the system. To that end, we compare two recent proposals when massless fermions
are included, both based on an effective anomalous dual model, but having
global and local Z_2 symmetries, respectively.
  We present a detailed analysis to show that while for large mass fermions the
global Z_2 symmetry is preferred, in the massless fermion case the local Z_2
scenario turns out to be the proper one.
  We present a detailed discussion about how the inclusion of massless fermions
in compact QED_3 leads to deconfinement, and discuss the stability of the
deconfined phase by introducing a description based on an instanton dipole
liquid picture.

22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas