Black Holes and Theoretical Physics

Black holes sit at the intersection of general relativity and quantum mechanics, two frameworks that remain stubbornly difficult to reconcile, and much of modern theoretical physics is organized around understanding what happens when both must apply at once. A powerful tool for probing this tension is the AdS/CFT correspondence, a conjecture from string theory proposing that a theory of gravity in a higher-dimensional space is exactly equivalent to a quantum field theory living on its lower-dimensional boundary — an idea called holography. This duality has produced concrete, testable predictions about strongly coupled systems, including the viscosity and thermodynamic properties of quark-gluon plasma formed in particle colliders, connecting black hole physics to laboratory experiments in unexpected ways. Central open questions include whether quantum entanglement is literally the thread from which spacetime is woven, how black holes preserve or destroy information about what falls into them, and whether supergravity approximations hold in regimes where string-theoretic corrections become large.

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Keywords

HolographicField TheoriesGravityString TheoryQuantum EntanglementBlack Holes