Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Confinement with Perturbation Theory, after All?   I call attention to the possibility that QCD bound states (hadrons) could be
derived using rigorous Hamiltonian, perturbative methods. Solving Gauss' law
for $A^0$ with a non-vanishing boundary condition at spatial infinity gives an
\order{\alpha_s^0} linear potential for color singlet $q\bar q$ and $qqq$
states. These states are Poincar\'e and gauge covariant and thus can serve as
initial states of a perturbative expansion, replacing the conventional free
$in$ and $out$ states. The coupling freezes at $\alpha_s(0)\simeq 0.5$,
allowing reasonable convergence. The \order{\alpha_s^0} bound states have a sea
of $q\bar q$ pairs, while transverse gluons contribute only at
\order{\alpha_s}. Pair creation in the linear $A^0$ potential leads to string
breaking and hadron loop corrections. These corrections give finite widths to
excited states, as required by unitarity. Several of these features have been
verified analytically in $D=1+1$ dimensions, and some in $D=3+1$.

32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org