Open strings on D-branes from ABJM

Abstract

We study open strings on giant gravitons (D-branes on cycles) in the ABJM/$Ad{S}_4\times {\mathbb{CP}}^3$ correspondence. We find that their energy spectrum has the same form as the one for closed strings, with a nontrivial function of the coupling, avoiding BMN scaling. A similar, Cuntz oscillator, Hamiltonian description for the string (operators at strong coupling) to the $Ad{S}_5$ case is valid also in this case.

25 pages, 4 figures; paragraph removed at end of section 2, footnotes and references added

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