PBS Space Time PBS Space Time

Does Space Materialize From A Holographic Boundary?

Sep 17, 2026 · 20m

Summary

This episode explores the holographic principle, arguing that our three-dimensional universe may emerge from a two-dimensional boundary. The host explains how black hole entropy led to the idea that space is an emergent phenomenon, using AdS/CFT correspondence to illustrate how lower-dimensional physics can generate higher-dimensional reality. The discussion covers the concept of dualities and sets the stage for future episodes on entropic gravity and quantum entanglement.

Topics discussed

Sponsors and introduction to the holographic principle Is space fundamental or an emergent phenomenon? Recap of the holographic principle and upcoming topics Thermodynamics, entropy, and hidden information Black hole properties and the Beckenstein bound Sponsor break Black hole entropy and the surface area formula The holographic principle: universe as a projection AdS/CFT correspondence and Juan Maldacena Conformal field theory and scale invariance Coarse-graining patterns and effective pixels Sponsor break Information density and effective radius of scales Nested spheres and the emergence of 3D space Radial direction and the bulk-boundary relationship Dualities in physics and the mystery of reality True vs. approximate dualities and ontological democracy Sponsor break Future episodes: entropic gravity and quantum entanglement Merchandise promotion and closing sponsors
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