Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Giant magnons in the D1-D5 system   We study giant magnons in the the D1-D5 system from both the boundary CFT and
as classical solutions of the string sigma model in $AdS_3\times S^3\times
T^4$. Re-examining earlier studies of the symmetric product conformal field
theory we argue that giant magnons in the symmetric product are BPS states in a
centrally extended $SU(1|1)\times SU(1|1)$ superalgebra with two more
additional central charges. The magnons carry these additional central charges
locally but globally they vanish. Using a spin chain description of these
magnons and the extended superalgebra we show that these magnons obey a
dispersion relation which is periodic in momentum. We then identify these
states on the string theory side and show that here too they are BPS in the
same centrally extended algebra and obey the same dispersion relation which is
periodic in momentum. This dispersion relation arises as the BPS condition for
the extended algebra and is similar to that of magnons in ${\cal N}=4$
Yang-Mills

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The categories of this paper are: hep-ex
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The categories of this paper are: eess
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The categories of this paper are: math
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas