Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD at complex coupling, large order in perturbation theory and the
  gluon condensate   We discuss the relationship between the large order behavior of the
perturbative series for the average plaquette in pure gauge theory and
singularities in the complex coupling plane. We discuss simple extrapolations
of the large order for this series. We point out that when these extrapolated
series are subtracted from the Monte Carlo data, one obtains (naive) estimates
of the gluon condensate that are significantly larger than values commonly used
in the continuum for phenomelogical purpose. We present numerical results
concerning the zeros of the partition function in the complex coupling plane
(Fisher's zeros). We report recent attempts to solve this problem using the
density of states. We show that weak and strong coupling expansions for the
density of states agree surprisingly well for values of the action relevant for
the crossover regime.

22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph