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Explore the fundamental limitations of spacetime emergence in holographic theories through this 45-minute conference talk examining when and why certain spacetime geometries fail to emerge from boundary descriptions. Delve into the core question of whether all spacetime geometries can emerge from holographic theories, with arguments drawn from both large N theoretical frameworks and tensor network models. Investigate the specific conditions under which regions of spacetime cannot be recovered through traditional holographic rules, challenging conventional understanding of the holographic principle. Examine various proposed solutions for restoring spacetime emergence and their connections to observer complementarity, a concept that addresses how different observers might perceive the same physical system. Gain insights into cutting-edge research at the intersection of quantum gravity, holography, and black hole physics, presented as part of a specialized workshop on quantum aspects of black holes and spacetime at the Institute for Advanced Study.
