Bulk Reconstruction of Scalar Excitations in Flat3/CCFT2 and the Flat Limit from (A)dS3/CFT2
Abstract
We explore the reconstruction of bulk local states in three-dimensional flat spacetime (Flat3) using states from two-dimensional Carrollian conformal field theories (CCFT2), proposed as dual field theories in one lower dimension. For massive scalar-type bulk excitations, reconstruction is achieved through states in the induced representation. This method successfully reproduces the bulk massive scalar spectrum and the bulk-to-bulk propagator. Additionally, we identify a new flat limit from AdS3 and dS3 spacetimes, further validating our proposal for scalar reconstruction in Flat3/CCFT2.
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