Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Lorentz Violating Nonlocal Field Theory From String-Theory   A four-dimensional field theory with a qualitatively new type of nonlocality
is constructed from a setting where Kaluza-Klein particles probe toroidally
compactified string theory with twisted boundary conditions. In this theory
fundamental particles are not pointlike and occupy a volume proportional to
their R-charge. The theory breaks Lorentz invariance but appears to preserve
spatial rotations. At low energies, it is approximately N=4 Super Yang-Mills
theory, deformed by an operator of dimension seven. The dispersion relation of
massless modes in vacuum is unchanged, but under certain conditions in this
theory, particles can travel at superluminal velocities.

30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con