String instanton in AdS(4)xCP(3)

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Cagnazzo, Alessandra
Sorokin, Dmitri
Wulff, Linus
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We study the string instanton wrapping a non-trivial two-cycle in CP(3) of the type IIA string theory compactified on AdS_4 x CP(3) superspace and find that it has twelve fermionic zero modes associated with 1/2 of the supersymmetry of the background thus manifesting that this classical instanton configuration is 1/2 BPS
Comment: 1+28 pages; v2: Section 3.1 extended, summary and discussion added; v3: added references, clarifications and Section 4.2 on supersymmetry properties of the instanton
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High Energy Physics - Theory
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