Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On N=2 strings and classical scattering solutions of self-dual
  Yang-Mills in (2,2) spacetime   Ooguri and Vafa have shown that the open N=2 string corresponds to self-dual
Yang-Mills (SDYM) and also that, in perturbation theory, it has has a vanishing
four particle scattering amplitude. We discuss how the dynamics of the three
particle scattering implies that on shell states can only scatter if their
momenta lie in the same self-dual plane and then investigate classical SDYM
with the aim of comparing exact solutions with the tree level perturbation
theory predictions. In particular for the gauge group SL(2,C) with a plane wave
Hirota ansatz SDYM reduces to a complicated set of algebraic relations due to
de Vega. Here we solve these conditions and the solutions are shown to
correspond to collisions of plane wave kinks. The main result is that for a
class of kinks the resulting phase shifts are non-zero, the solution as a whole
is not pure gauge and so the scattering seems non-trivial. However the stress
energy and Lagrangian density are confined to string like regions in the space
time and in particular are zero for the incoming/outgoing kinks so the solution
does not correspond to physical four point scattering.

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The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
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The categories of this paper are: quant-ph
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The categories of this paper are: math
24
The categories of this paper are: dg-ga