NS5 Brane and Little String Duality in the pp-wave Limit

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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13 pages, revtex. v2: Typos mended; explanation clarified; reference added

Scientific paper

10.1103/PhysRevD.68.086001

We study NSR strings in the Nappi-Witten background, which is the Penrose limit of a certain NS5-brane supergravity solution. We solve the theory in the light-cone gauge, obtaining the spectrum, which is space-time supersymmetric. In light of the LST/NS5-brane duality, this spectrum should be in correspondence with the states of little string theory in the appropriate limit. A semiclassical analysis verifies that the relationship between energy and angular momentum, after a field redefinition, matches the known result for a flat background.

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