Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local Axion Cosmic Strings from Superstrings   Axionic cosmic string solutions are investigated in a superstring motivated
model with a pseudo-anomalous U(1) gauge symmetry. The inclusion of a gauge
field and spatially varying dilaton allow local defect solutions with finite
energy per unit length to be found. Fermion zero modes (whose presence is
implied by supersymmetry) are also analysed. The corresponding fermion currents
suggest strong cosmological bounds on the model. It is shown that the unusual
form of the axion strings weakens these bounds. Other cosmological constraints
on the underlying theory are also discussed.

18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
37
The categories of this paper are: supr-con