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The $T\bar T$ deformation of a conformal field theory has a dual descriptionas a cutoff $AdS_3$ spacetime, at least at the level of pure 3d gravity. Wegeneralize this deformation in such a way that it builds up a patch of bulk$dS_3$ spacetime instead. At each step along the trajectory in the space of$2d$ theories, the theory is deformed by a specific combination of $T\bar T$and the two-dimensional cosmological constant. This provides a concreteholographic dual for the warped throat on the gravity side of the dS/dSduality, at leading order in large central charge. We also analyze a sequenceof excitations of this throat on both sides of the duality, as well as theentanglement entropy. Our results point toward a mechanism for obtaining deSitter solutions starting from seed conformal field theories with AdS duals.

dS/dS and $T\bar T$