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Three-point functions for M^N/S^N orbifolds with N=4 supersymmetry

Oleg Lunin·Samir D. Mathur
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Abstract

The D1-D5 system is believed to have an `orbifold point' in its moduli space where its low energy theory is a N=4 supersymmetric sigma model with target space M^N/S^N, where M is T^4 or K3. We study correlation functions of chiral operators in CFTs arising from such a theory. We construct a basic class of chiral operators from twist fields of the symmetric group and the generators of the superconformal algebra. We find explicitly the 3-point functions for these chiral fields at large N; these expressions are `universal' in that they are independent of the choice of M. We observe that the result is a significantly simpler expression than the corresponding expression for the bosonic theory based on the same orbifold target space.

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Oleg Lunin, Samir D. Mathur. 2001-03-29. Three-point functions for M^N/S^N orbifolds with N=4 supersymmetry. https://doi.org/10.1007/s002200200638

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