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Explore the quantum behavior of states in the semiclassical limit of the AdS/CFT correspondence through this 41-minute conference talk from the Workshop on Quantum Aspects of Black Holes and Spacetime. Examine how gravitational systems involving black holes and baby universes deviate from converging to simple, pure quantum states in the semiclassical regime. Discover how black holes with diverging entropy as G approaches zero can approach mixed states instead, effectively representing information loss in the semiclassical limit. Investigate baby universe configurations where wormhole effects fundamentally prevent the existence of a conventional semiclassical limit. Learn about potential extensions to the AdS/CFT correspondence that incorporate averaging mechanisms to address these quantum gravitational phenomena and their implications for our understanding of spacetime and information theory in quantum gravity.
