Information Loss and Bulk Reconstruction in AdS_3/CFT_2

We discuss how the dynamics of semiclassical gravity in 3d AdS follow from the large central charge limit of irreducible representations of the conformal algebra of 2d CFTs, with a focus on black hole information loss and bulk reconstruction. We describe recent and ongoing work to extract “non-perturbative” (in Newton’s constant) gravitational effects from the exact behavior of such irreps at large but finite central charge.