Abstract
We study in more detail the dynamics of chiral primaries of the D1/D5 system. From the CFT given by the S{sub N} orbifold a study of correlators resulted in an interacting (collective) theory of chiral operators. In AdS{sub 3}xS{sup 3} SUGRA we concentrate on general 1/2 BPS configurations described in terms of a fundamental string. We first establish a correspondence with the linearized field fluctuations and then present the nonlinear analysis. We evaluate in detail the symplectic form of the general degrees of freedom in SUGRA and confirm the appearance of chiral bosons. We then discuss the appearance of interactions and the cubic vertex, in correspondence with the S{sub N} collective field theory representation.
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