Exploring Hidden Dimensions with Brian Greene

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Mar 31, 2026

Brian Greene, theoretical physicist and Columbia professor known for string theory and popular science books, joins to explore quantum many-worlds, the structure of multiverses, extra dimensions and brane-world ideas. Short, lively dives cover Hilbert space and infinities, entanglement and wormholes, attempts to detect gravitons and hidden dimensions, and how AI might aid big theoretical problems.

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INSIGHT

Inflation Makes Bubble Universes In One Spacetime

Inflationary cosmology can produce a bubble multiverse: leftover inflationary energy spawns separate Big Bang regions (bubbles) within the same spacetime.
These bubbles are spatially separate pockets in one larger inflationary construct.

INSIGHT

Brane Worlds Let Gravity Leak Between Universes

String theory can place our universe on a membrane (brane) next to others in extra dimensions, letting gravity leak between them.
Photon-like forces can be confined to a brane while gravitons (closed loops) can traverse the higher-dimensional bulk.

ADVICE

Treat AI Like A Super Graduate Student For Hard Problems

Use AI as an advanced research assistant to accelerate problem solving and reproduce complex calculations.
Brian Greene tested ChatGPT by prompting it like a grad student and it reproduced months of work in under an hour.

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Is our universe an inevitable outcome of the laws of physics? Neil deGrasse Tyson and comic co-host Chuck Nice sit down with theoretical physicist Brian Greene to discuss the Many-Worlds Interpretation, the structure of the multiverse, levels of infinity, and respond to cosmic queries Neil couldn’t answer.

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