On the shoulders of Giants - Quantum gravity and braneworld stability

Understand

The semi-classical nature of braneworld cosmological models does not account for any quantum gravitational effects.

• In this letter we use the gauge/gravity correspondence to argue that quantum string corrections cannot be ignored in any study of braneworld stability.
• As an example, we find, by analysing the quantum gravitational backreaction, that a closed universe is unstable to radiation into the bulk.