Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-Dimensional Quantum Gravity on a Disk   We study a two-dimensional conformal field theory coupled to quantum gravity
on a disk. Using the continuum Liouville field approach, we compute three-point
correlation functions of boundary operators. The structure of momentum
singularities is different from that of correlation functions on a sphere and
is more complicated. We also compute four-point functions of boundary operators
and three-point functions of two boundary operators and one bulk operator.

37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs