Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An inconsistency in the spectrum of bosonic open 2-brane   We show that the spectrum of a bosonic open 2-brane does not contain any
massless states to take the role of gravitons. Moreover, the spectrum of this
open 2-brane only contains half integer mass squared values.

24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ