Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-dependent backgrounds of two dimensional string theory from the
  $c=1$ matrix model   The aim of this paper is to use correspondence between solutions in the $c=1$
matrix model collective field theory and coupled dilaton-gravity to a massless
scalar field. First, we obtain the incoming and outgoing fluctuations for the
time-dependent backgrounds with the lightlike and spacelike boundaries. In the
case of spacelike boundaries, we have done here for the first time. Then by
using the leg-pole transformations we find corresponding tachyon field in two
dimensional string theory for lightlikes and spacelikes boundary.

37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex