Live Blogging: Teh

We are interested in BTZ black hole solution, the aysmpototic symmetries of which form algebras and have a central charge.

Cherns-Simons theory on a manifold with boundary induces a boundary CFT which is dual.

The central charge acquires a physical interpretation through this duality. The boundary CFT is part of the way we understand the gravitational phenomena.

Witten: This is like the S-matrix.

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