Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Type of String Field Theory   We propose a new way of second quantizing string theory. The method is based
on considering the Fock space of strings described by constituents which make
up the $X^\mu_R$ and the $X^\mu_L$ i.e. the right and left mover modes
separately. A state with any number of strings get represented by the Cartesian
product of two free particle Fock spaces, one for right mover degrees of
freedom, and one for left. The resulting string field theory is a free theory.

8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn