A Stringy Effect on Hawking Radiation

Understand

In string theories, interactions are exponentially suppressed for trans-Planckian space-like external momenta.

• We study a class of quantum field theories that exhibit this feature modeled after Witten's bosonic open string field theory, and discover a Lorentz-invariant UV/IR relation that leads to the spacetime uncertainty principle proposed by Yoneya.
• Application to a dynamical black hole background suggests that Hawking radiation is turned off around the scrambling time.