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The exact description of NS5-branes in the Penrose limit

K. Sfetsos
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Abstract

We construct plane wave backgrounds with time-dependent profiles corresponding to Penrose limits of NS5-branes with transverse space symmetry group broken from SO(4) to SO(2)\times Z_N. We identify the corresponding exact theory as the five-dimensional Logarithmic Conformal Field Theory (CFT) arising from the contraction of the SU(2)_{N'}/U(1)\times SL(2,R)_{-N} exact CFT, times R^5. We study several general aspects and construct the free field representation in this theory. String propagation and spectra are also considered and explicitly solved in the light-cone gauge.

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K. Sfetsos. 2003-05-13. The exact description of NS5-branes in the Penrose limit. https://doi.org/10.1016/j.nuclphysb.2003.07.017

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