Abstract
We construct an exact metric which at short distances is the metric of massless particles in 5+1 spacetime (moving along a diameter of the sphere) and is AdS 3× S 3 at infinity. We also consider a set of a conical defect spacetimes which are locally AdS 3× S 3 and have the masses and charges of a special set of chiral primaries of the dual orbifold CFT. We find that excitation energies for a scalar field in the latter geometries agree exactly with the excitations in the corresponding CFT state created by twist operators: redshift in the geometry reproduces ‘long circle’ physics in the CFT. We propose a map of string states in AdS 3× S 3× T 4 to states in the orbifold CFT, analogous to the recently discovered map for AdS 5× S 5. The vibrations of the string can be pictured as oscillations of a Fermi sea in the CFT.
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